County · Colorado

Jefferson County, Colorado

Jefferson County, Colorado has a quality-of-life score of 81 out of 100 (very high), ranking #602 of 3,143 US counties. Within Colorado it ranks #16 of 64 counties. It ranks best on physical inactivity (low), adult obesity (low) and high school diploma or higher (high). It ranks worst on high ozone days (high), property crime rate (high) and days with unhealthy air (high).

81Very high
Quality-of-life score
#602 of 3,143 counties
Colorado
#16 of 64 in CO
Population
580,451 (2025)
Land area
764 mi²
Density
759.3 /mi²
FIPS code
08059

Percentile-based score (100 is the best in the country) from 77 of 80 indicators, with the default “Explorer” weights.

Location of Jefferson County, Colorado

Scores by category

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

  • Safety39#1,897/3,096
  • Economy94#205/3,143
  • Housing7#2,915/3,140
  • Health87#394/3,144
  • Healthcare96#118/3,143
  • Environment29#2,202/3,108
  • Education94#179/3,144
  • Infrastructure96#119/3,144
  • Community87#397/3,144
  • Leisure & amenities70#944/3,143

Strengths · Weaknesses

Indicators where Jefferson County, Colorado 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, Colorado five years ago that improved

The places whose measures looked most like those of Jefferson County, Colorado 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 Denver-Aurora-Centennial, CO

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. Lakewood156,583
  2. Arvada122,634
  3. Dakota Ridge33,753
  4. Ken Caryl33,233
  5. Wheat Ridge32,070
  6. Columbine25,478
  7. Golden20,417
  8. Fairmount9,902
  9. Evergreen8,602
  10. Applewood8,350
  11. West Pleasant View5,051
  12. Edgewater4,932
  13. Genesee3,778
  14. Coal Creek2,346
  15. Indian Hills986
  16. East Pleasant View832
  17. Kittredge812
  18. Aspen Park742
  19. Mountain View609
  20. Morrison412
  21. Idledale297
  22. Lakeside4

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.

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