County · Missouri

Jefferson County, Missouri

Jefferson County, Missouri has a quality-of-life score of 56 out of 100 (moderate), ranking #1,375 of 3,143 US counties. Within Missouri it ranks #21 of 115 counties. It ranks best on income inequality (Gini index) (low), mental health care shortage (low) and rent-burdened households (low). It ranks worst on suicide rate (high), time spent in the emergency room (high) and firearm deaths (high).

56Moderate
Quality-of-life score
#1,375 of 3,143 counties
Missouri
#21 of 115 in MO
Population
233,132 (2025)
Land area
656 mi²
Density
355.4 /mi²
FIPS code
29099

Percentile-based score (100 is the best in the country) from 80 of 80 indicators, with the default “Explorer” weights.

Location of Jefferson County, Missouri

Scores by category

Each category averages its indicators' percentile scores among US counties.

  • Safety35#2,002/3,096
  • Economy81#595/3,143
  • Housing86#439/3,140
  • Health43#1,805/3,144
  • Healthcare67#1,040/3,143
  • Environment13#2,695/3,108
  • Education71#898/3,144
  • Infrastructure70#943/3,144
  • Community57#1,342/3,144
  • Leisure & amenities7#2,912/3,143

Strengths · Weaknesses

Indicators where Jefferson County, Missouri ranks highest and lowest among US counties (score = percentile, 100 = best).

Strengths

Weaknesses

What changed in five years

How each measure moved between two periods about five years apart, read against whether more or less is better, the published margin of error and the same change in other places.

Counties like Jefferson County, Missouri five years ago that improved

The places whose measures looked most like those of Jefferson County, Missouri in the earlier period, ranked by how many measures improved beyond the margin of error, minus how many declined. A comparison of published data, not a forecast and not advice.

Who lives here

Age, race and education of residents, from the American Community Survey. Shares are of all residents (age), residents of every origin (race) or adults 25 and over (education).

Income

How household income is spread, not just the middle: each bar is the share of households in that income range.

Homes

Who owns and who rents, what homes cost, and what the housing stock looks like.

Getting to work

How workers travel to their job and how long it takes them.

Jobs and pay

What the largest occupations here pay, from the Bureau of Labor Statistics' Occupational Employment and Wage Statistics survey.

The Bureau of Labor Statistics publishes pay by metro area, not by county or city. The metro area page lists its largest occupations and lets you look up any job.

Pay in the St. Louis, MO-IL

Local businesses

Employer businesses and sole proprietors by industry, per resident and against the state and the nation. Counts of businesses next to counts of people, not a measure of demand.

Federal contract spending

Federal grants & assistance

Grants, loans (counted at their subsidy cost), direct payments and insurance, by fiscal year of the action (USAspending.gov, FABS). Reported apart from contracts and never added to them.

Public money & outcomes

Federal money per resident by fiscal year next to how the place changed, and, when its money jumped, how it compares with similar counties. A comparison, not cause and effect.

Representation in Congress

Members serving today, with their record in the current Congress (party-unity votes cast with their caucus, roll calls missed). Not a grade.

Metro area

The metro or micro area Jefferson County belongs to. A county is in at most one.

Cities and towns in Jefferson County

Places whose residents live mostly in Jefferson County, largest first.

  1. Arnold20,956
  2. Festus13,201
  3. Murphy8,285
  4. De Soto6,470
  5. Pevely6,055
  6. Barnhart5,785
  7. Imperial5,488
  8. Herculaneum5,071
  9. Crystal City4,718
  10. High Ridge3,714
  11. Hillsboro3,500
  12. Byrnes Mill3,189
  13. Raintree Plantation2,047
  14. LaBarque Creek1,457
  15. Cedar Hill1,261
  16. Summer Set1,236
  17. Horine781
  18. Olympian Village694
  19. Briarwood Estates307
  20. Cedar Hill Lakes284
  21. Scotsdale216
  22. Parkdale204
  23. Lake Tekakwitha202
  24. Peaceful Village117

Neighboring counties

Places that share a border, best score first.

Similar counties

Closest indicator profiles across the country (no model: score distances).

Data and sources

Latest published value of each indicator; periods differ by source. Values flagged by their publisher are marked.

JSON · /api/v1/places/29099