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COUNTY

Jefferson County

Colorado · 580,451 residents (2025 est.) · 764 sq mi
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Part of the Denver metro area
The short version

Jefferson County is a county of 579,377 people in Colorado. This is an unusually credentialed place: 52% of adults have a four-year degree. Few US counties rank higher on income. The typical home is worth $637,600, having roughly tripled since 2000. The foreign-born share is 6%. The median household earns $110,656, about 35% above the national median.

At a glance
Wealthier
above the US median
US median: $82,259
Mid-age
median age 40.5
US median: 38.9
More educated
52% hold a bachelor's degree
US average: 36%
Less affordable
home values up 90%, inflation adjusted
US median home: $376,019
Section 01

Population & growth

Total population
579,377
+10%since 2000
from 527,056 in 2000
580,451 in 2025 (Census Bureau estimate)
1990 – 2025
Population density
758 / sq mi
+10%since 2009
from 692 / sq mi in 2009
US average: 281
Median age
40.5
+10%since 2000
from 36.8 in 2000
US average: 38.9
Land area
764 sq mi
Population, 1990 – 2024
424K467K511K554K597K19902000201020202024Jefferson County
2024579K
1990201020202024
Age distribution, 2024
Under 54.7%(26,993)
US avg: 5.6%
5 to 95.2%(29,892)
US avg: 6%
10 to 145.2%(30,148)
US avg: 6.4%
15 to 195.6%(32,552)
US avg: 6.6%
20 to 245.3%(30,533)
US avg: 6.5%
25 to 3415.4%(89,085)
US avg: 13.7%
35 to 4415.2%(87,906)
US avg: 13.2%
45 to 5412.4%(72,001)
US avg: 12.2%
55 to 6413.2%(76,624)
US avg: 12.7%
65 to 7410.9%(63,345)
US avg: 10.2%
75 to 845%(29,077)
US avg: 5.1%
85 and over1.9%(11,221)
US avg: 1.9%
BAR + DOT: THIS PLACE · TICK: US AVERAGE
Section 02

Income & economy

Median household income
$110,656
+6%inflation adjusted, since 2000
from $57,339 in 2000
US average: $82,259
1990 – 2024
Per capita income
$60,827
+117%since 2000
from $28,066 in 2000
US average: $44,673
Households earning $100K+
67.5%
+24.5 ptssince 2009
from 43.0% in 2009
US average: 53.3%
Poverty rate
6.7%
+1.5 ptssince 2000
from 5.2% in 2000
US average: 12.5%
Income inequality (Gini)
0.434
+2%since 2010
from 0.426 in 2010
US average: 0.476
Workforce by industry, 2024
Information9.9%
US avg: 10.8%
Other services7.6%
US avg: 6.7%
Wholesale trade7.5%
US avg: 6.9%
Retail trade7.3%
US avg: 9.9%
Public administration5%
US avg: 4.8%
Finance & insurance4.3%
US avg: 5.9%
Professional, scientific, technical3.2%
US avg: 5.1%
Arts, entertainment, food2.8%
US avg: 1.9%
Transportation & warehousing2.2%
US avg: 2.2%
Agriculture, forestry, fishing1.2%
US avg: 1.6%
Education & health services1.1%
US avg: 0.9%
Manufacturing0.8%
US avg: 0.4%
Construction0.5%
US avg: 1.2%
BAR + DOT: THIS PLACE · TICK: US AVERAGE
Section 03

Housing

Median home value
$637,600
+90%inflation adjusted, since 2000
from $184,200 in 2000
US average: $376,019
1990 – 2024
Median gross rent
$1,861
+34%inflation adjusted, since 2000
from $760 in 2000
US average: $1,442
Owner-occupied
70.7%
−1.8 ptssince 2000
from 72.5% in 2000
29.3% rent
Vacancy rate
4.7%
−0.4 ptssince 2009
from 5.1% in 2009
US average: 10.0%
Persons per household
2.36 people
−2%since 2009
from 2.42 people in 2009
US average: 2.54
Owner cost-burdened
22.0%
−8.3 ptssince 2009
from 30.2% in 2009
US average: 22.9%
Renter cost-burdened
51.0%
+4.0 ptssince 2009
from 47.1% in 2009
US average: 47.4%
Afford Score
5.8
+47%since 2009
from 3.9 in 2009
2009 – 2024
Years of local income it takes to buy a local home, on a scale of about 0 to 15. Lower is more affordable.
Gentrification Score
92
Our index, 0 to 100. Higher means faster recent growth in incomes, home values, and college degrees.
Section 04

Race & ethnicity

2000
White, non-Hispanic84.9%(447,416)
Black0.8%(4,312)
Hispanic / Latino10%(52,449)
Asian2.2%(11,855)
Other0%
2024
White, non-Hispanic75.2%(435,828)
Black1.1%(6,364)
Hispanic / Latino16.1%(93,302)
Asian2.9%(16,591)
Other4.7%(27,292)
Diversity Score
51
+21%since 2009
from 42 in 2009
2009 – 2024
Our index, 0 to 100. Higher means a more even mix of racial and ethnic groups.
Segregation Score
24
−13%since 2020
from 27 in 2020
Our index, 0 to 100. Higher means White and non-White residents are more separated across neighborhoods.
Section 04 · Origins

Detailed origins & ancestry

Hispanic origin
Mexican10.7%(61,938)
Spaniard1%(6,061)
South American0.9%(5,048)
Central American0.5%(3,124)
Puerto Rican0.4%(2,472)
Cuban0.3%(1,554)
Venezuelan0.2%(1,307)
Peruvian0.2%(1,009)
Colombian0.2%(953)
Guatemalan0.1%(831)
Costa Rican0.1%(693)
Salvadoran0.1%(676)
+ 10 more hispanic origin groups with data
Chilean0.1%(509)
Nicaraguan0.1%(389)
Honduran0.1%(377)
Bolivian0.1%(370)
Ecuadorian0.1%(366)
Argentine0%(277)
Dominican0%(183)
Uruguayan0%(139)
Panamanian0%(135)
Asian origin
Vietnamese0.6%(3,708)
Chinese0.6%(3,189)
Asian Indian0.4%(2,203)
Korean0.3%(1,834)
Filipino0.2%(1,435)
Japanese0.2%(1,350)
Nepalese0.1%(459)
Hmong0%(264)
Pakistani0%(252)
Taiwanese0%(244)
Thai0%(222)
Cambodian0%(149)
+ 9 more asian origin groups with data
Kazakh0%(140)
Laotian0%(128)
Mongolian0%(89)
Mien0%(34)
Burmese0%(28)
Okinawan0%(10)
Pacific Islander origin
Samoan0.1%(317)
Chamorro0%(83)
Tongan0%(16)
Ancestry
German21%(121,840)
English14.7%(85,053)
Irish13.4%(77,379)
Italian6.5%(37,763)
American3.4%(19,457)
Polish3.2%(18,385)
Scottish2.8%(16,454)
French2.4%(14,008)
Norwegian2.4%(13,966)
Swedish2.4%(13,860)
Dutch1.7%(9,922)
Scotch-Irish1.2%(6,788)
+ 47 more ancestry groups with data
Welsh1%(5,524)
Russian0.9%(5,432)
Czech0.9%(5,091)
Danish0.8%(4,770)
British0.7%(3,781)
Arab0.5%(2,900)
Hungarian0.4%(2,445)
Swiss0.4%(2,388)
French Canadian0.4%(2,355)
Ukrainian0.4%(2,283)
Greek0.4%(2,190)
Austrian0.3%(1,929)
Portuguese0.3%(1,722)
Finnish0.3%(1,528)
Lithuanian0.2%(1,189)
Slovak0.2%(986)
Canadian0.2%(952)
Romanian0.2%(910)
Croatian0.2%(891)
Lebanese0.1%(774)
Slovene0.1%(734)
Belgian0.1%(677)
West Indian0.1%(633)
Brazilian0.1%(569)
Iranian0.1%(533)
Serbian0.1%(469)
Armenian0.1%(422)
Syrian0.1%(375)
Australian0.1%(320)
Nigerian0.1%(309)
Palestinian0.1%(297)
Jordanian0%(281)
Jamaican0%(265)
Bulgarian0%(243)
Turkish0%(223)
Ethiopian0%(199)
Latvian0%(187)
Egyptian0%(158)
Moroccan0%(153)
Israeli0%(122)
Haitian0%(83)
Barbadian0%(73)
Iraqi0%(30)
Kenyan0%(14)
Section 05

Education

Bachelor's degree or higher
52.0%
+15.4 ptssince 2000
from 36.5% in 2000
US average: 35.6%
High school or higher
95.8%
+4.0 ptssince 2000
from 91.8% in 2000
US average: 89.6%
Graduate degree
19.3%
+7.2 ptssince 2000
from 12.1% in 2000
US average: 14.0%
Section 06

Commute & transportation

Average commute
26.0 min
+41%since 2000
from 18.5 min in 2000
US average: 26.5
Drive alone to work
64.4%
−13.4 ptssince 2009
from 77.9% in 2009
US average: 68.9%
Carpooled to work
5.7%
−3.4 ptssince 2009
from 9.1% in 2009
US average: 8.5%
Public transit
1.3%
−2.2 ptssince 2009
from 3.5% in 2009
US average: 3.2%
Worked from home
25.4%
+19.3 ptssince 2009
from 6.1% in 2009
US average: 15.0%
Walked to work
1.4%
−0.2 ptssince 2009
from 1.7% in 2009
US average: 2.4%
Biked to work
0.5%
Unchangedsince 2009
from 0.5% in 2009
US average: 0.4%
No vehicle available
4.0%
−0.4 ptssince 2009
from 4.4% in 2009
US average: 8.3%
Section 07

Work & employment

Unemployment rate
3.9%
−3.3 ptssince 2011
from 7.2% in 2011
US average: 5.2%
Labor force participation
69.3%
−1.4 ptssince 2011
from 70.7% in 2011
US average: 63.5%
Women 20-64 in the labor force
81.3%
+1.6 ptssince 2020
from 79.7% in 2020
US average: 74.6%
Self-employed
11.9%
+0.7 ptssince 2009
from 11.2% in 2009
US average: 13.1%
Management & professional
53.7%
+12.1 ptssince 2009
from 41.6% in 2009
US average: 42.5%
Section 08

People & community

Male
50.3%
+0.6 ptssince 2009
from 49.8% in 2009
Female
49.7%
−0.6 ptssince 2009
from 50.2% in 2009
Foreign born
6.3%
−0.1 ptssince 2009
from 6.4% in 2009
US average: 14.1%
Veterans
6.5%
−5.1 ptssince 2009
from 11.5% in 2009
US average: 6.2%
With a disability
11.0%
+1.6 ptssince 2012
from 9.4% in 2012
US average: 13.3%
Uninsured
5.3%
−6.1 ptssince 2013
from 11.4% in 2013
US average: 8.4%
Broadband at home
95.1%
+8.2 ptssince 2017
from 86.9% in 2017
US average: 91.0%
Computer in household
97.6%
+1.9 ptssince 2020
from 95.7% in 2020
US average: 95.5%
Same house as last year
85.8%
+1.0 ptssince 2020
from 84.8% in 2020
US average: 87.7%
English only at home
90.0%
+0.8 ptssince 2016
from 89.2% in 2016
US average: 77.7%
Spanish at home
5.8%
−0.5 ptssince 2016
from 6.3% in 2016
US average: 13.6%
Marital status
Men 15+
Never married35.2%(86,875)
Married53%(130,913)
Widowed2.2%(5,536)
Divorced9.6%(23,692)
Women 15+
Never married27.9%(68,513)
Married51.7%(126,878)
Widowed6.7%(16,353)
Divorced13.7%(33,584)
SHARE WITHIN EACH SEX · POPULATION 15 AND OVER · 2024
Section 09

Health coverage

Uninsured
5.3%
−6.1 ptssince 2013
from 11.4% in 2013
US average: 8.4%
Employer-based
63.4%
−0.3 ptssince 2020
from 63.7% in 2020
US average: 54.8%
Direct-purchase
14.1%
−1.2 ptssince 2020
from 15.3% in 2020
US average: 13.8%
Medicare
18.1%
+0.9 ptssince 2020
from 17.2% in 2020
US average: 18.4%
Medicaid
12.8%
−0.4 ptssince 2020
from 13.2% in 2020
US average: 20.9%
VA health care
1.8%
−0.2 ptssince 2020
from 2.0% in 2020
US average: 2.2%
Any private
75.7%
−1.2 ptssince 2020
from 76.9% in 2020
US average: 67.1%
Any public
29.8%
+0.7 ptssince 2020
from 29.1% in 2020
US average: 36.7%

Shares are "alone or in combination": a person with both Medicare and Medicaid counts in each, so categories overlap and do not sum to 100%.

Section 09 · Service history

Veterans

Veterans by period of service, 2024
Gulf War (2001 or later)24.1%(7,334)
US avg: 26.4%
Gulf War (1990s)22.2%(6,769)
US avg: 24.3%
Vietnam era33.7%(10,271)
US avg: 33.1%
Korean War5.1%(1,554)
US avg: 4.5%
World War II0.5%(158)
US avg: 1%

Share of the 30,483 veterans here. A veteran who served across eras counts in each, so shares can total more than 100%. Peacetime-only service is included in the total but not shown as an era.

BAR + DOT: THIS PLACE · TICK: US AVERAGE
Drill deeper

Places similar to Jefferson County

Washington County
Pop 611,708
Johnson County
Pop 636,906
Plymouth County
Pop 546,829
Union County
Pop 601,863
Places similar to Jefferson County
Head to head

Compare Jefferson County to nearby counties

JEFFERSON COUNTY VS
Denver County
Income$94,718−14%
Home value$616,000−3%
Population740,613+28%
SEE FULL COMPARISON →
JEFFERSON COUNTY VS
Clear Creek County
Income$94,577−15%
Home value$608,500−5%
Population8,994−98%
SEE FULL COMPARISON →
JEFFERSON COUNTY VS
Douglas County
Income$149,594+35%
Home value$713,600+12%
Population399,396−31%
SEE FULL COMPARISON →
JEFFERSON COUNTY VS
Gilpin County
Income$95,361−14%
Home value$573,900−10%
Population6,073−99%
SEE FULL COMPARISON →
Frequently asked

How many people live in Jefferson County, Colorado?

Jefferson County, Colorado has about 579,377 residents according to the 2024 American Community Survey.

What is the median household income in Jefferson County, Colorado?

The typical household in Jefferson County, Colorado earns about $110,656 a year. Half of households make more than that, and half make less.

Is Jefferson County, Colorado expensive?

In Jefferson County, Colorado, the median home is worth about $637,600, and the typical rent is about $1,861 a month.

How educated are people in Jefferson County, Colorado?

About 52.0% of adults age 25 and over in Jefferson County, Colorado hold a bachelor's degree or higher.

What is the poverty rate in Jefferson County, Colorado?

About 6.7% of people in Jefferson County, Colorado live below the federal poverty line.

Has Jefferson County, Colorado grown since 1990?

Yes, Jefferson County, Colorado has grown since 1990. The population has added about 140,947 residents, a change of about 32 percent over that period.

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DATA: US CENSUS BUREAU ACS 5-YEAR + DECENNIAL CENSUS · UPDATED 2024

How we source and harmonize this data →