Jefferson County, MO

Population: 228,227 · Median Income: $80,522 · 656 sq mi

Population

228,227

Median Income

$80,522

Median Home Value

$218,800

Unemployment

3.6%

Median Age

40.2 yrs

Poverty Rate

8.6%

Median Rent

$972/mo

Land Area

656 sq mi

Cities

2024 Lean

R+36.7%

Jefferson County is a county in Missouri with a population of 228,227. The median household income is $80,522. The median home value is $218,800. The unemployment rate is 3.6%. The median age is 40.2 years. There are 26 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

Republican

Dem Votes

36,965

31.0%

GOP Votes

80,796

67.7%

Total Votes

119,287

View full election history →

Cities in Jefferson County

Source: Census Bureau