Jefferson County, CO

Population: 579,715 · Median Income: $107,800 · 764 sq mi

Population

579,715

Median Income

$107,800

Median Home Value

$604,400

Unemployment

3.9%

Median Age

40.4 yrs

Poverty Rate

6.7%

Median Rent

$1,792/mo

Land Area

764 sq mi

Cities

2024 Lean

D+19.5%

Jefferson County is a county in Colorado with a population of 579,715. The median household income is $107,800. The median home value is $604,400. The unemployment rate is 3.9%. The median age is 40.4 years. There are 27 cities in Jefferson County.

Explore Jefferson County Data

🗳️ Elections & Voting 👥 Demographics & Population 💵 Income & Poverty 🏠 Housing & Real Estate 💼 Employment & Commuting

2024 Election Results

Source: County Election Data

Winner

Democrat

Dem Votes

210,875

58.3%

GOP Votes

140,505

38.9%

Total Votes

361,504

View full election history →

Cities in Jefferson County

Source: Census Bureau