San Mateo, CA β€” City Data, Demographics & Statistics

San Mateo County Β· California

🧬

City DNA

A unique fingerprint for San Mateo based on 8 key metrics β€” compared to averages.

PopulationIncomeHome ValueSafetyEducationMedian AgeClimateCost of Living
San Mateo
National Avg
California Avg
Population: 73Income: 100Home Value: 100Safety: 100Education: 60Median Age: 63Climate: 50Cost of Living: 100

Quick Stats

Population

103,555

2023 ACS

Median Income

$152,669

2023

Median Home Value

$1,563,200

2023

Median Rent

$3,079

2023

Median Age

38.0

Unemployment

4.3%

Cost of Living Index

257.9

100 = national avg

San Mateo is a city in San Mateo County, California, with a population of 103,555 according to the 2023 American Community Survey. San Mateo is one of the communities in California.

The median household income in San Mateo is $152,669, and the median home value is $1,563,200. The cost of living index is 257.9 (where 100 = national average), and the median rent is $3,079 per month. The unemployment rate is 4.3%, and the median age is 38.0 years.

People & Demographics

Source: U.S. Census Bureau ACS (2023)

Population

Total Population

103,555

Male

51,380

49.6%

Female

52,175

50.4%

Median Age

38.0

Age Distribution

Education & Household

Bachelor's or Higher

42.1%

High School or Higher

51.0%

Foreign Born

36.6%

Veterans

2.1%

Married

42.6%

Avg Household Size

2.6

Marital Status by Age

Race & Ethnicity

Diversity Index

0.647

Simpson's Index (0-1)

Largest Group

White

41.2%

Foreign Born

36.6%

White
41.2%
Black
1.5%
Asian
27.1%
Native American
1.3%
Pacific Islander
1.6%
Two or More
13.3%
Other
13.9%

Hispanic/Latino Ethnicity

Hispanic/Latino is an ethnicity, not a race. People of any race can identify as Hispanic. This percentage overlaps with the racial categories above.

Hispanic/Latino

26.8%

27,722 people

Not Hispanic/Latino

73.2%

Hispanic/Latino Detail

Source: U.S. Census Bureau ACS (2023)
Mexican
13,722 (49.5%)
Puerto Rican
654 (2.4%)
Cuban
194 (0.7%)
Dominican
50 (0.2%)
Salvadoran
3,592 (13.0%)
Guatemalan
3,284 (11.8%)
Colombian
376 (1.4%)
Honduran
417 (1.5%)
Ecuadorian
77 (0.3%)
Peruvian
1,566 (5.6%)
Other Hispanic
3,789 (13.7%)

Asian Detail

Source: U.S. Census Bureau ACS (2023)
Asian Indian
4,732 (16.9%)
Chinese
12,208 (43.6%)
Filipino
4,781 (17.1%)
Vietnamese
416 (1.5%)
Korean
1,239 (4.4%)
Japanese
1,510 (5.4%)
Pakistani
200 (0.7%)
Cambodian
35 (0.1%)
Thai
35 (0.1%)
Taiwanese
805 (2.9%)
Other Asian
2,064 (7.4%)

Native Hawaiian & Pacific Islander Detail

Source: U.S. Census Bureau ACS (2023)
Native Hawaiian
53 (3.1%)
Samoan
234 (13.8%)
Chamorro
2 (0.1%)
Tongan
955 (56.2%)
Fijian
435 (25.6%)
Other Pacific Islander
22 (1.3%)

American Indian & Alaska Native Detail

Source: U.S. Census Bureau ACS (2023)
Other Native American
1,390 (100.1%)

Languages Spoken

Total Speakers (5+)

97,382

English Only

54.9%

#1 Non-English Language

Spanish

19,216 speakers

Limited English

17.3%

Language Distribution

Spanish
19,216 (19.7%)
Chinese
8,516 (8.7%)
Other Indo-European
5,317 (5.5%)
Other Asian
3,418 (3.5%)
Tagalog
2,676 (2.7%)
Slavic Languages
1,559 (1.6%)
French/Haitian/Cajun
1,008 (1.0%)
Korean
655 (0.7%)
Arabic
644 (0.7%)
German
402 (0.4%)

English Proficiency

Speaks English Very Well

82.7%

Limited English Proficiency

17.3%

Spanish
45.9% limited English
Chinese
40.4% limited English
Other Indo-European
24.5% limited English
Other Asian
26.2% limited English
Tagalog
26.7% limited English
Slavic Languages
43.2% limited English
French/Haitian/Cajun
29.1% limited English
Korean
43.8% limited English
Arabic
43.6% limited English
German
6.0% limited English

Veterans & Military

Total Veterans

2,199

2.1% of population

Disability Rate

10.6%

233 with disability

Veteran Median Income

$77,222

Unemployment Rate

2.5%

Period of Service

Gulf War (2001+)
13.6%
Gulf War (1990-2001)
12.2%
Vietnam
35.1%
Korea
11.2%
World War II
3.0%

Veteran Age Distribution

18-34
5.8%
35-54
13.1%
55-64
18.6%
65-74
16.2%
75+
46.3%

Male Veterans

2,044

93.0%

Female Veterans

155

7.0%

Veteran vs Non-Veteran Income

Veteran Income

$77,222

Non-Veteran Income

$71,743

Difference

$5,479

7.6% higher

Disability Status

With Disability

233

Without Disability

1,966

Disability Rate

10.6%

Ancestry & Heritage

Total Reporting Ancestry

44,191

#1 Ancestry

Irish

7.1% (7,331)

#2 Ancestry

German

5.9% (6,093)

#3 Ancestry

Italian

5.6% (5,825)

Top 20 Ancestries

Source: U.S. Census Bureau ACS (2023)
Irish
7.1%
German
5.9%
Italian
5.6%
English
4.6%
American
2.5%
European
1.8%
French
1.7%
Arab
1.6%
Polish
1.6%
Scottish
1.6%
Russian
1.3%
Norwegian
1.0%
Greek
0.9%
Portuguese
0.9%
Dutch
0.7%
Swedish
0.7%
British
0.5%
Brazilian
0.5%
Scotch-Irish
0.4%
Welsh
0.4%

Families & Households

Total Households

39,760

Family Households

24,677

62.1%

Married Couples

19,202

48.3%

Non-Family Households

15,083

37.9%

Single Mother Households

3,656

9.2%

Single Father Households

1,819

4.6%

Living Alone

11,615

29.2%

Children Under 18

Total Children

17,923

In Married Couple

13,724

76.6%

With Single Mother

2,914

16.3%

With Single Father

1,285

7.2%

Family Income

Median Family Income

$190,044

Married Couple Income

$221,509

Single Mother Income

$85,298

Single Father Income

$100,646

Avg Family Size

2.6

Avg Non-Family Size

2.5

Grandparents w/ Grandchildren

1,982

Grandparents Responsible

342

Economy

Source: U.S. Census Bureau ACS (2023)

Income Overview

Median Household Income

$152,669

+108% vs national

Per Capita Income

$80,312

+116% vs national

Poverty Rate

7.9%

-42% vs national

Gini Index

0.4700

0 = perfect equality

Unemployment

4.3%

-18% vs national

SNAP Recipients

3.9%

of households

How San Mateo Compares

San Mateo vs Similar Cities

Compared to cities with 50,000 - 100,000 residents. San Mateo is highlighted.

Median Household Income

Per Capita Income

Poverty Rate

Unemployment Rate

πŸ“Š

Where Do You Stack Up?

Enter your household income to see how you compare to other households in San Mateo. The median household income here is $152,669.

$

Income Distribution

<$25K
8.4%
$25-50K
9.8%
$50-75K
8.2%
$75-100K
7.5%
$100-150K
15.4%
$150-200K
13.0%
$200K+
37.7%

Employment Snapshot

Unemployment Rate

4.3%

-44% vs CA avg

Labor Force

59,457

Employed

56,906

Mean Commute

21 min

How People Get to Work

Employment by Sector

Education & Workforce

Bachelor's Degree+

42.1%

of adults 25+

High School Diploma+

51.0%

of adults 25+

Median Age

38.0

Work from Home

22.3%

of workers

Cost of Living

Overall Index

257.9

100 = national avg

+157.9 vs national average

Living Wage (1 Adult)

$113,477

per year

Living Wage (Family of 4)

$268,218

per year

Cost Index by Category

Housing
400.0
Food
166.7
Transportation
150.4
Healthcare
153.4
Utilities
200.0

100 = national average. Higher = more expensive.

Fair Market Rent

Source: HUD

1 Bedroom

$2,977

per month

2 Bedroom

$3,604

per month

The median household income in San Mateo, CA is $152,669, which is 108.5% above the national average of $73,224. Per capita income is $80,312. The poverty rate of 7.9% is lower than the CA state average of 13.0%. The Gini index of income inequality is 0.4700, where 0 represents perfect equality and 1 represents maximum inequality. The unemployment rate is 4.3%, compared to the state average of 7.6%. The labor force is 59,457. 42.1% of adults hold a bachelor's degree or higher. The average commute time is 21 minutes, with 22.3% working from home. About 58.5% of workers drive alone to work. The overall cost of living index is 257.9, which is 157.9% above the national average. Housing costs are above the national average at an index of 400.0. A single adult needs to earn approximately $113,477 per year to cover basic expenses.

Housing & Real Estate

Market SnapshotRedfin β€” January 2026

Median Sale Price

$1,450,000

Median List Price

$1,398,500

Price Per Sq Ft

$963

Days on Market

17

Active Inventory

78

Months of Supply

2.4

Seller's market

Zillow Home Value

$1,603,057

ZHVI β€” January 2026

Zillow Rent Index

$3,370

ZORI β€” January 2026

Market CompetitivenessRedfin

Sold Above List

43.8%

Off Market in 2 Weeks

54.0%

Sale-to-List Ratio

103.1%

Seller's market

Sold Above Asking
43.8%
Under Contract in 2 Wks
54.0%
Listings with Price Drops
14.1%

Price TrendsRedfin

Sale Price ↓ 9.4%List Price ↑ 13.0%Mar 24 β†’ Jan 26

Market ActivityRedfin

Homes Sold

32

New Listings

66

Pending Sales

37

Homes Sold ↓ 43.9%New Listings ↓ 27.5%Pending ↓ 40.3%Mar 24 β†’ Jan 26

Price Per Square FootRedfin

Median Sale $/SF

$963

Median List $/SF

$981

Sale $/SF ↓ 2.0%List $/SF ↑ 8.4%Mar 24 β†’ Jan 26

San Mateo vs Similar CitiesCensus ACS / Redfin

Compared to cities with 50,000 - 100,000 residents. San Mateo is highlighted.

Median Home Value

Median Rent

Median Price Per Sq Ft

Rent Burden

Census Housing DataU.S. Census Bureau ACS 2023

Median Home Value

$1,563,200

Median Rent

$3,079

Total Housing Units

42,431

Vacancy Rate

6.3%

Owner Occupied

50.8%

Renter Occupied

49.2%

Median Property Tax

$9,646

per year

Monthly Cost (w/ Mortgage)

$3,263

Housing Types

Single Family
51.0%
Multi-Family
48.7%
Mobile Home
0.3%

Property TaxU.S. Census Bureau ACS 2023

Median Property Tax

$9,646

per year

Effective Tax Rate

0.62%

of home value

Median Home Value

$1,563,200

Estimated Mean Tax

$10,999

The effective property tax rate is calculated by dividing the median annual property tax ($9,646) by the median home value ($1,563,200). In San Mateo, CA, this works out to an effective rate of 0.62%. This is below the national average of approximately 1.1%.

The current median sale price in San Mateo, CA is $1,450,000 according to Redfin data. Homes spend a median of 17 days on the market. 43.8% of homes sold above asking price. The market has 2.4 months of supply. The median price per square foot is $963. Zillow's observed rent index is $3,370/month. About 50.8% of housing units are owner-occupied. The median year homes were built is 1964. There are 42,431 total housing units. Homeowners pay a median annual property tax of $9,646. The effective tax rate is 0.62%, below the national average.

Crime Overview

Source: FBI Crime Data Explorer (2024)

Violent Crime Rate

2.43

per 1,000 residents

-6% vs national

Property Crime Rate

18.83

per 1,000 residents

+9% vs national

Total Crimes

2,125

2024

Violent Clearance

44%

cases solved

Property Clearance

22%

cases solved

YoY Change

-30.1%

violent crime rate

improving vs 2023

How San Mateo Compares

Source: FBI (2024)

San Mateo vs Similar Cities

Source: FBI (2024)

Compared to cities with 50,000 - 100,000 residents. San Mateo is highlighted in green.

Violent Crime Rate (per 1,000)

Property Crime Rate (per 1,000)

Murder Rate (per 1,000)

Crime Rate Trends

Source: FBI
Violent ↓ 4.6%Property ↓ 3.9%2015 β†’ 2024

Crime Composition

Source: FBI (2024)

Violent Crime Breakdown

Property Crime Breakdown

Crime Clearance (Solve) Rates

Source: FBI (2024)

San Mateo police solve 60% of murder cases but only 3% of motor vehicle theft cases.

Weapon Used in Violent Crime

Source: FBI (2024)

Crime Breakdown

Source: FBI Crime Data Explorer (2024)
Crime TypeCategoryCountRate per 1KClearance %
MurderViolent50.0560.0%
RapeViolent260.2623.1%
RobberyViolent740.7445.9%
Aggravated AssaultViolent1381.3846.4%
BurglaryProperty980.985.1%
Larceny/TheftProperty1,57715.7825.4%
Motor Vehicle TheftProperty2072.072.9%

San Mateo, CA reported 243 violent crimes and 1,882 property crimes in 2024. The violent crime rate of 2.43 per 1,000 residents is 6.5% below the national average of 2.60 per 1,000. Law enforcement cleared 44% of violent crimes. Larceny/theft accounts for 1,577 of the property crime reports. Firearms were involved in 21.0% of aggravated assaults. Violent crime has been trending downward.

Crime History

Source: FBI
YearViolentPropertyViolent RateProperty Rate
20242431,8822.4318.83
20233441,8983.4819.19
20223052,3423.0823.61
20202742,3062.6021.91
20192662,2172.5120.91
20182852,1632.6920.44
20172682,1252.5520.22
20162422,1412.3120.43
20152662,0452.5519.61

Natural Hazard Risk

Source: FEMA National Risk Index

Risk Score

99.2

Relatively High

Expected Annual Loss

99.4

Score (0-100)

Social Vulnerability

20.5

Score (0-100)

Community Resilience

97.6

Score (0-100)

Scores range from 0 (lowest risk) to 100 (highest risk) relative to all U.S. communities. Data from FEMA National Risk Index.

Disaster History & Federal Spending

Source: FEMA

Total Declarations

24

Public Assistance

$173.0M

Individual Assistance

$6.0M

Most Common Type

Severe Storm

7 declarations

Public Assistance by Category

Total: $171.9M
DisasterTypeDatePA $IA $
Severe Winter Storms, Straight-line Wind… β†’Severe StormApr 2023$3.1Mβ€”
Severe Winter Storms, Flooding, Landslid… β†’FloodMar 2023β€”β€”
Severe Winter Storms, Flooding, Landslid… β†’FloodJan 2023$13.6M$4.4M
Severe Winter Storms, Flooding, and Muds… β†’FloodJan 2023β€”β€”
Wildfires β†’FireAug 2020$2.4M$167K
Czu Lightning Fire Complex β†’FireAug 2020β€”β€”
Covid-19 Pandemic β†’BiologicalMar 2020$140.0M$1.4M
Covid-19 β†’BiologicalMar 2020β€”β€”
Severe Winter Storms, Flooding, and Muds… β†’FloodApr 2017$5.4Mβ€”
Severe Winter Storms, Flooding, and Muds… β†’FloodMar 2017$3.2Mβ€”
Severe Winter Storms, Flooding, and Muds… β†’Severe Storm(s)Feb 2017$13Kβ€”
Glenview Fire β†’FireSep 2010β€”β€”
Severe Storms, Flooding, Landslides, and… β†’Severe StormJun 2006$2.2Mβ€”
Severe Storms, Flooding, Mudslides, and … β†’Severe StormFeb 2006$3.2Mβ€”
Hurricane Katrina Evacuation β†’HurricaneSep 2005β€”β€”
Severe Winter Storms and Flooding β†’Severe StormFeb 1998β€”β€”
Severe Storms, Flooding, Mud and Landsli… β†’Severe StormJan 1997β€”β€”
Severe Winter Storms, Flooding Landslide… β†’Severe StormMar 1995β€”β€”
Severe Winter Storms, Flooding, Landslid… β†’Severe StormJan 1995β€”β€”
Severe Freeze β†’FreezingFeb 1991β€”β€”

Showing 20 of 26 disasters

PA = FEMA Public Assistance (infrastructure recovery). IA = Individual Assistance (homeowner/renter aid).

Flood Insurance (NFIP)

Source: FEMA NFIP

Total Claims

1,109

Total Claims Paid

$20,033,204

Avg Claim Payout

$18,064

County-level NFIP data from FEMA National Flood Insurance Program.

Hazard Mitigation

Source: FEMA Hazard Mitigation Assistance

Mitigation Projects

37

Federal Funding

$29,413,912

Properties Protected

67

Avg Benefit-Cost Ratio

5.24

BCR

Top Mitigation Project Types

Project TypeProjectsFederal $
205.6: Structural Retrofitting/Rehabilitating Public Structures - Seismic9$7,444,307
300.2: Vegetation Management - Wildfire3$1,278,514
200.1: Acquisition of Private Real Property (Structures and Land) - Riverine3$6,846,099
91.1: Local Multihazard Mitigation Plan2$48,450
500.1: Flood Control - Floodwall2$85,659

Federally funded projects to reduce future disaster risk. Only includes completed or obligated projects.

San Mateo has a relatively high overall natural hazard risk rating according to FEMA's National Risk Index. The top hazard risks are earthquake, landslide, drought. The area has had 24 federal disaster declarations. The most common disaster type is severe storm (7 declarations). 1,109 flood insurance claims have been filed in the area. FEMA has obligated $172,981,685 in public assistance recovery funding. $5,963,632 has been distributed in individual assistance to disaster-affected residents. 37 hazard mitigation projects have been funded to reduce future risk.

Health

Community Health

Source: CDC PLACES

Obesity Rate

23.0%

13.1pp below the national average

Depression Rate

19.3%

4.2pp below the national average

Diabetes Rate

9.4%

2.5pp below the national average

Uninsured Rate

7.3%

3.3pp below the national average

Health Scorecard

Higher scores indicate better health outcomes relative to the national average (50 = average)

Health Outcomes

Age-adjusted prevalence rates. Green bars indicate rates below the national average; red indicates above.

High Cholesterol

35.2%

Arthritis

19.0%

Cancer (excl. skin)

6.5%

Teeth Lost (65+)

6.6%

Health Risk Behaviors

Prevention & Screening

Green bars indicate rates above the national average (more preventive care); red indicates below.

Mental Health & Wellbeing

Frequent Mental Distress

13.9%

14+ days in past month

Depression

19.3%

Loneliness

34.7%

Lack of Support

25.7%

Disability Prevalence

Any Disability

24.0%

Mobility

10.3%

Cognitive

11.4%

Hearing

5.0%

Vision

4.0%

Self-Care

2.7%

Independent Living

6.1%

Health-Related Social Needs

Prevalence of social risk factors affecting community health

San Mateo has an obesity rate of 23.0%, which is 13.1pp below the national average. The depression rate is 19.3%, 4.2pp below the national average. About 7.3% of adults lack health insurance. 70.0% of residents had an annual checkup in the past year.

Nearby Hospitals

Source: CMS Hospital Compare

Nearest Hospitals

5

With Emergency Services

5

Avg CMS Rating

4.8 / 5

Nearest Hospital

1.5 mi

San Mateo Medical Center

Loading map…
HospitalDistanceTypeRatingER
San Mateo Medical Center1.5 miAcute Care Hospitalsβ€”Yes
Peninsula Medical Center3.6 miAcute Care Hospitals5/5Yes
Kaiser Foundation Hospital - Redwood City7.8 miAcute Care Hospitals4/5Yes
Kaiser Foundation Hospital - South San Francisco8.8 miAcute Care Hospitals5/5Yes
Sequoia Hospital9.6 miAcute Care Hospitals5/5Yes

Climate & Environment

Water Systems

Source: EPA SDWIS

Water Systems

4

Pop. Served

271

Violations (5yr)

7

System NamePop. ServedViolations (5yr)
LAZY B MOBILEHOME PARK1256
MOUNTAIN VIEW MOBILE HOME PARK750
SHIRK MOBILE HOME PARK390
BLUE LAKES MOBILE HOME PARK321

There are 4 water systems serving the area. 7 water quality violations have been reported in the past 5 years.

Infrastructure

Commute Overview2023 ACS

Mean Commute

21 min

-10% vs national

Drive Alone

58.5%

-26% vs national

Public Transit

6.1%

+581% vs national

Work From Home

22.3%

+140% vs national

Carpool

6.9%

Walk / Bike

3.7%

combined

How San Mateo's Commute ComparesCensus ACS 2023

How People Get to WorkCensus ACS 2023

Commute Mode BreakdownCensus ACS 2023

Traffic Fatalities

Source: NHTSA FARS (2023)

Fatalities

2

2023

6-Year Avg

3

fatalities/yr

Nighttime

2

dark conditions

YearCrashesFatalitiesAlcoholPedestrianCyclist
202322000
202244000
202111000
202066230
201911010
201811001

Data from NHTSA Fatality Analysis Reporting System (FARS). Includes only crashes involving at least one fatality.

The average commute in San Mateo, CA is 21 minutes, which is 9.8% below the national average of 23 minutes. 58.5% of workers drive alone, compared to the national average of 78.7%. 22.3% work from home, which is above the CA state average of 14.0%. Public transit is used by 6.1% of commuters, compared to the national average of 0.9%. 6.9% of workers carpool. 2.9% walk to work. 0.7% commute by bicycle. In 2023, there were 2 traffic fatalities from 2 fatal crashes.

Internet & Broadband Access

Source: Census ACS

Broadband Access

95.2%

of households

Cable / Fiber / DSL

85.3%

of households

No Internet

3.7%

of households

Total Households

39,760

Internet Subscription Types

Cable, Fiber, or DSL
85.3%
Cellular Data Plan
91.2%
Satellite
4.8%
Cellular Only (no wired)
8.6%
No Internet Access
3.7%

Device Ownership

Source: Census ACS

Has Computer

97.8%

of households

Smartphone

94.2%

of households

Desktop / Laptop

89.7%

of households

Tablet

72.8%

of households

Any Computing Device
97.8%
Smartphone
94.2%
Desktop / Laptop
89.7%
Tablet
72.8%
Smartphone Only
4.5%
No Computer
2.2%

Percentage of households with each device type. Data from the U.S. Census Bureau ACS (2023 5-year estimates, tables B28001 & B28002).

Electricity Rates

Source: U.S. Energy Information Administration (2024)

Residential Rate

32.0Β’

per kWh

+74% vs 50,000 - 100,000 avg

Commercial Rate

25.5Β’

per kWh

+73% vs 50,000 - 100,000 avg

Industrial Rate

21.5Β’

per kWh

+94% vs 50,000 - 100,000 avg

Avg Monthly Bill

$161

residential

+11% vs 50,000 - 100,000 avg

87% above the national average of 17.1Β’/kWh

Residential electricity in California averages 32.0Β’ per kWh, compared to the national average of 17.1Β’. The average monthly electric bill is $161. State-level averages from EIA Electric Sales & Revenue data (2024).

San Mateo vs Similar Cities

Source: EIA (2024)

Comparing electricity rates with randomly selected cities of similar population (50,000 - 100,000). Each city represents its state's average rate.

Residential Rate (Β’/kWh)

Commercial Rate (Β’/kWh)

Industrial Rate (Β’/kWh)

Average Monthly Bill

Water Systems

Source: EPA SDWIS

Water Systems

4

Population Served

271

Violations (5yr)

7

System NameTypeSourcePop. ServedViolations
LAZY B MOBILEHOME PARKCommunityGround water1256
MOUNTAIN VIEW MOBILE HOME PARKCommunityGround water750
SHIRK MOBILE HOME PARKCommunityGround water390
BLUE LAKES MOBILE HOME PARKCommunityGround water321

95.2% of households in San Mateo have broadband internet access. 85.3% have cable, fiber, or DSL service. 8.6% rely solely on cellular data without a wired connection. 3.7% of households have no internet access. The area is served by 4 water systems, providing water to 271 people. A total of 7 water quality violations have been recorded over the past 5 years.

Politics & Government

County-level data: Election results are reported at the county level. San Mateo is located in San Mateo County, CA. Results reflect all voters in the county, not just those in San Mateo.

Election Overview

Source: San Mateo County (2024)

2024 Winner

Democrat

Dem Votes

242,957

73.5%

GOP Votes

76,616

23.2%

Total Votes

330,510

Margin

D+50.3%

Shift from 2020

R+7.4pp

vs prior election

πŸ“ŠElection Results by Year
2016–2024
πŸ“ˆPartisan Lean Trend
D+50.3%

Election History

Source: County-Level Election Results
YearDem VotesGOP VotesTotalDem %GOP %Margin
2024242,95776,616330,51073.5%23.2%D+50.3
2020291,41075,563374,13877.9%20.2%D+57.7
2016219,58053,731287,49976.4%18.7%D+57.7

In the 2024 presidential election, San Mateo County recorded 330,510 total votes. Democrats won the county with 73.5% of the vote compared to 23.2% for Republicans, a margin of D+50.3%. Compared to 2020, the margin shifted R+7.4pp from the previous election. Since 2016, San Mateo County has shifted 7.4 percentage points toward Republicans.

Public Records Request

Source: sanmateoca.mycusthelp.com

Submit a public records request to San Mateo β€” Uses GovQA portal.

Source: sanmateoca.mycusthelp.com

Nonprofits Overview

Source: IRS Exempt Organizations BMF

Total Nonprofits

504

Total Assets

$1.6B

Total Income

$1.1B

Per 10K Residents

48.7

nonprofits

+27.4% vs peers avg

Orgs with >$1M Assets

74

Median Assets

$327K

Oldest Active

1941

ruling year

Newest Org

2026

ruling year

Nonprofits by Category

Source: IRS / NTEE Classification
Human Services
72
Education
54
Philanthropy
40
Religion
38
Arts & Culture
32
Recreation & Sports
27
Environment
11
Health Care
11
Mental Health
11
Youth Development
10
Community Improvement
10
Housing & Shelter
7
International
7
Science & Tech
6
Animal-Related
5
Civil Rights
5
Voluntary Health
4
Medical Research
4
Public Benefit
4
Unknown
4
Crime & Legal
3
Food & Agriculture
3
Public Safety
3
Employment
2
Social Science
1
64.0%of all nonprofit assets are held by the 10 largest organizations

Top 10 hold $1.0B of $1.6B total

Nonprofit Size Distribution

Source: IRS Exempt Organizations BMF

Number of nonprofits by total asset size

When Were Nonprofits Founded?

Source: IRS Ruling Date

Number of currently active nonprofits by founding decade

Nonprofits per 10K Residents vs Similar Cities

Source: IRS BMF + Census ACS

Compared to cities with population 50,000 - 100,000

Largest Nonprofits in San Mateo

Source: IRS Exempt Organizations BMF
OrganizationCategoryAssetsIncomeEst.IRS
ROBERTS FOUNDATIONβ€”$324.1M$210.7M1985
DRAPER FOUNDATIONEducation$188.3M$96.6M1998
ANNUAL REVIEWS INVESTMENT CORPORATIONScience & Tech$130.2M$7.6M2015
MINORITY TELEVISION PROJECT INCArts & Culture$109.3M$5.7M2019
PEKING UNIVERSITY EDUCATION FOUNDATION USAInternational$72.6M$8.3M2000
BAY AREA SENIOR SERVICES INCHousing & Shelter$56.2M$20.6M1993
CAMINARMental Health$47.8M$55.1M1968
GREENE VAN ARSDALE FOUNDATIONPhilanthropy$40.4M$3.6M1997
BASZUCKI FAMILY FOUNDATIONPhilanthropy$39.5M$120.5M2022
SAN MATEO COUNTY COMMUNITY COLLEGES FOUNDATIONEducation$38.1M$13.7M1967
SAMARITAN HOUSEβ€”$38.0M$33.4M1975
THE CAREY SCHOOLβ€”$35.5M$15.2M1990
BEYOND TYPE1Health Care$29.9M$17.4M2015
BEILIN-MAKAGON ART FOUNDATIONArts & Culture$26.7M$1.8M2021
HOUSING ENDOWMENT & TR OF SAN MATEO COUNTYReligion$24.8M$3.6M2008
FRIENDS OF 40 BAYWOOD AVENUEArts & Culture$21.4M$21.8M2025
SAN MATEO COUNTY EXPOSTION AND FAIR ASSOCIATIONRecreation & Sports$19.8M$15.0M1948
FAMILY HOUSING AND ADULT RESOURCES INCHuman Services$19.4M$11.6M1970
HUMAN INVESTMENT PROJECT INCHousing & Shelter$17.2M$9.3M1972
BLUME FOUNDATIONβ€”$17.2M$4.5M1959
SOCIETY OF ST VINCENT DE PAUL PARTICULAR COUNCIL OF SAN MATEOHuman Services$16.7M$12.3M2009
HIP HOUSING DEVELOPMENT CORPORATIONHousing & Shelter$15.1M$4.6M1992
CURIODYSSEYArts & Culture$14.6M$6.6M1955
MIDDLETON FOUNDATIONβ€”$14.1M$4.6M1990
ROTARY HACIENDAS INCHousing & Shelter$13.5M$2.0M1986
PENINSULA FAMILY SERVICEHuman Services$12.8M$23.4M1950
AVALON ACADEMYEducation$12.8M$4.6M2005
MISSION HOSPICE & HOME CARE INCHuman Services$12.6M$19.0M1979
LEON A & ESTHER F BLUM FOUNDATION INCUnknown$12.1M$431K1982
ST JOHNS VOLUNTEERSβ€”$12.1M$14.3M1978
ZIEF FAMILY FOUNDATION INCβ€”$12.1M$1.4M1988
CORA COMMUNITY OVERCOMING RELATIONSHIP ABUSEβ€”$9.7M$9.4M1978
COURTNEY ROBERTS FOUNDATIONPhilanthropy$9.0M$2.2M2007
STANBRIDGE ACADEMYβ€”$8.3M$5.6M1975
WITH FOUNDATIONPhilanthropy$8.0M$9.5M2002
PENINSULA BRIDGE PROGRAMUnknown$7.8M$5.8M1995
LIJIN GOUHUA FOUNDATIONPhilanthropy$7.2M$2.8M2007
ERIK S CASSEL FOUNDATIONPhilanthropy$7.0M$3.6M2019
ODYSSEY SCHOOLEducation$7.0M$2.4M1998
THE OLYMPIC CLUB FOUNDATIONReligion$6.8M$2.1M1992
ANNUAL REVIEWSScience & Tech$6.6M$17.1M1948
SAN MATEO COUNTY HEALTH FOUNDATIONβ€”$6.4M$2.8M1994
BAY AREA CANCER CONNECTIONSVoluntary Health$5.4M$4.2M1996
DAY SCHOOL FOUNDATIONEducation$5.2M$1.6M1996
ELFENWORKS FOUNDATIONPhilanthropy$5.2M$4.1M2007
CHINA TIMES CULTURAL FOUNDATIONβ€”$3.9M$2.0M1986
SONRISAS DENTAL HEALTH INCHealth Care$3.6M$5.5M2001
FRIENDS OF THE MANDARIN SCHOLARS IN THE SMFCSDEducation$3.2M$2.3M2012
ROBERT I & LIEN Q CHEN FAMILY FOUNDATIONPhilanthropy$3.1M$1.0M2015
XELAY FOUNDATIONPhilanthropy$2.5M$1.4M2016

San Mateo, CA has 504 registered 501(c)(3) nonprofit organizations with combined assets of $1.6B. The most common category is Human Services, with 72 organizations. 74 nonprofits have assets exceeding $1 million. That works out to 48.7 nonprofits per 10,000 residents. The oldest active nonprofit dates back to 1941.

SBA Lending Overview

Source: SBA FOIA Loan-Level Data

Total SBA Loans

729

Total Approved

$308.4M

Jobs Supported

5,880

Per 10K Residents

70.4

SBA loans

-1.3% vs peers avg

Unique Lenders

118

Top Lender

Wells Fargo Bank National Association

112 loans

Top Industry

Health Care & Social Assistance

Data Span

1992–2026

Loan Program Breakdown

Source: SBA FOIA
7(a)88% of all loans

Loans

639

Total Amount

$236.7M

Avg Loan

$370,415

Median Loan

$150,000

SBA Guaranteed

$177.8M(75%)

Jobs Supported

4,965

50412% of all loans

Loans

90

Total Amount

$71.7M

Avg Loan

$796,744

Median Loan

$572,500

7(a) β€” 88%504 β€” 12%

Recent Activity (Last 5 Years)

Source: SBA FOIA

Recent Loans

102

14% of all-time total

Recent Amount

$73.8M

24% of all-time total

Avg Recent Loan

$723,356

Top Industries Funded

Source: SBA FOIA / NAICS Codes
Health Care & Social Assistance105 loans
NAICS 62
$58.6M
Other Services92 loans
NAICS 81
$33.6M
Professional & Technical Services85 loans
NAICS 54
$32.4M
Accommodation & Food Services76 loans
NAICS 72
$30.7M
Construction67 loans
NAICS 23
$27.9M

SBA Loans per 10K Residents vs Similar Cities

Source: SBA FOIA + Census ACS

Compared to cities with population 50,000 - 100,000

Top SBA Borrowers

Source: SBA FOIA
BusinessLoansAmount
Mi Rancho Supermarket San Mateo Inc4$13.6M
San Mateo Car Wash2$5.4M
The San Mateo Schools Inc.1$4.7M
Cbr Properties Llc2$4.7M
Discount Signs & Neon Inc.3$4.6M
Offleash Pr Llc2$3.6M
Nazareth Ice Oasis San Mateo Llc1$3.5M
Crystal Springs Services Inc1$3.3M
Krupa Hospitality Inc.2$3.2M
Cowlick Inc2$3.2M

San Mateo, CA has received 729 SBA loans totaling $308.4M in approved funding between 1992 and 2026. The 7(a) program accounts for 639 loans (88% of the total), supporting 4,965 jobs. The 504 program, focused on real estate and large equipment, has funded 90 loans totaling $71.7M. The most common industry receiving SBA funding is Health Care & Social Assistance. The most active SBA lender in San Mateo is Wells Fargo Bank National Association with 112 loans. That works out to 70.4 SBA loans per 10,000 residents.

ZIP Code Overview

Source: Census ACS

ZIP Codes

20

Total Population

547,627

Avg Median Income

-$33,166,221

Avg Home Value

-$31,787,223

ZIP Code Details

Source: Census ACS
ZIP CodePopulationMedian IncomeHome ValueMedian RentArea (sq mi)
9400227,730$204,573$2,000,001$2,8895.6
9401042,794$191,758$2,000,001$2,65515.1
940183,404$225,763$1,405,400$2,0340.6
9401914,754$153,272$1,509,300$1,97759.7
940277,030$250,001$2,000,001$3,5015.0
9403022,589$157,567$1,929,700$3,4013.4
940383,016$128,333$1,112,900N/A5.9
9404437,540$156,658$1,211,700$3,07515.1
9406137,369$141,599$1,938,300$2,8183.9
9406225,944$233,333$2,000,001$2,88564.7
9406334,695$115,528$1,077,100$2,8026.5
9406511,620$213,361$1,847,000$3,5012.3
9406642,875$135,976$1,199,400$2,6966.1
9407030,696$235,373$2,000,001$2,8026.1
9408065,036$135,966$1,159,500$2,84010.2
941280N/AN/AN/A3.4
9440135,628$121,258$1,123,300$2,7133.1
9440225,498$179,683$2,000,001$3,4765.0
9440343,459$179,825$1,725,900$3,2735.6
9440435,950$182,417$1,682,700$3,5014.3

San Mateo, CA has 20 ZIP codes with a combined population of 547,627. The average median household income across all ZIP codes is -$33,166,221. The average median home value is -$31,787,223. The average median monthly rent is -$66,664,025.

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