State rank#7 of 115
Smallest county229,458 residentsSt. Louis County
Published county profile · Official data · FIPS 29099
Jefferson County, Missouri
County-level income, housing, jobs, education, health, and population with transparent statewide comparisons and source periods.
Population229,458
Household income$82,851
Unemployment3.3%
Life expectancy75 years
County overview
Living metrics at a glance
Jefferson County has 229,458 residents and ranks #7 by population among Missouri county equivalents. Median household income is $82,851. The annual-average unemployment rate is 3.3%. Its clearest relative strength is median household income. Its county population is above the state county median. Every figure below stays at county scope.
Within Missouri
County population range
The marker places this county between the smallest and largest county populations in the state.
Relocation guide
Moving to Jefferson County: what to check
Data narrows the search; municipality, neighborhood, commute, schools, and current listings complete the decision.
Before moving
Before moving, compare municipalities inside Jefferson County, because county averages do not describe every neighborhood. Review current housing inventory, commute destinations, school districts, healthcare access, and job locations. Its clearest relative strength is median household income.
Cost and housing
Housing benchmarks are $237,200 median home value and $979/mo median gross rent. Set those costs against a median household income of $82,851, while remembering that household circumstances and municipalities vary.
Who it may suit
Jefferson County may be worth a closer look for movers prioritizing median household income, uninsured, and unemployment rate. College attainment is 24.7% and life expectancy is 75 years.
Potential advantages
- Median household income: $82,851, rank #8 of 115 available Missouri counties.
- Uninsured: 9.5%, rank #10 of 115 available Missouri counties.
- Unemployment rate: 3.3%, rank #12 of 115 available Missouri counties.
Trade-offs to check
- Median home value: $237,200, rank #104 of 115; investigate local variation before moving.
- Median gross rent: $979/mo, rank #102 of 115; investigate local variation before moving.
- Primary care access: 1 per 3,927 residents, rank #72 of 111; investigate local variation before moving.
Income, housing, jobs, education & health
County metrics within Missouri
Rank and range use only counties in Missouri with that field available. A lower rank number is stronger when the metric has a clear direction.
Median household income
$82,851
$82,851; above the state county median of $59,934.
State rank #8 of 115 · U.S. Census Bureau — American Community Survey
Median home value
$237,200
$237,200; above the state county median of $168,100.
State rank #104 of 115 · U.S. Census Bureau — American Community Survey
Median gross rent
$979/mo
$979/mo; above the state county median of $767/mo.
State rank #102 of 115 · U.S. Census Bureau — American Community Survey
Unemployment rate
3.3%
3.3%; below the state county median of 3.8%.
State rank #12 of 115 · U.S. Bureau of Labor Statistics — Local Area Unemployment Statistics
Bachelor’s degree or higher
24.7%
24.7%; above the state county median of 18.3%.
State rank #25 of 115 · U.S. Census Bureau — American Community Survey
Life expectancy
75 years
75 years; above the state county median of 74.7 years.
State rank #45 of 115 · County Health Rankings & Roadmaps
Poor or fair health
17.6%
17.6%; below the state county median of 20.2%.
State rank #20 of 115 · County Health Rankings & Roadmaps
Uninsured
9.5%
9.5%; below the state county median of 12.6%.
State rank #10 of 115 · County Health Rankings & Roadmaps
Primary care access
1 per 3,927 residents
1 per 3,927 residents; above the state county median of 1 per 2,914 residents.
State rank #72 of 111 · County Health Rankings & Roadmaps
Mental health access
1 per 866 residents
1 per 866 residents; below the state county median of 1 per 1,028 residents.
State rank #49 of 111 · County Health Rankings & RoadmapsCommon questions
Jefferson County FAQ
Is Jefferson County a good place to live?
Jefferson County may be worth a closer look for movers prioritizing median household income, uninsured, and unemployment rate. College attainment is 24.7% and life expectancy is 75 years.
What should I know before moving to Jefferson County?
Start with housing, employment, commute, schools, healthcare access, and the specific municipality. Housing benchmarks are $237,200 median home value and $979/mo median gross rent. Set those costs against a median household income of $82,851, while remembering that household circumstances and municipalities vary.
What is the population of Jefferson County?
Jefferson County has 229,458 residents in the 2020–2024 ACS 5-year dataset.
What is the FIPS code for Jefferson County?
The five-digit county FIPS code is 29099; the parent state FIPS is 29.
What is the median household income in Jefferson County?
The ACS median household income is $82,851.
How much does housing cost in Jefferson County?
Housing benchmarks are $237,200 median home value and $979/mo median gross rent. Set those costs against a median household income of $82,851, while remembering that household circumstances and municipalities vary.
What is the unemployment rate in Jefferson County?
The BLS LAUS annual-average unemployment rate is 3.3%.
Similar population
Nearby counties in the state ranking
Source and gate
Methodology and source periods
All records join by five-digit FIPS. Profiles publish when ACS county population is at least 100,000 or the county is the state’s largest. Missing source values remain unavailable and are excluded from ranks. Runtime data was generated 2026-07-26.
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