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COUNTY

Jefferson County

Colorado · 580,451 residents (2025 est.) · 764.383 sq mi
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Part of the Denver metro area
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Notable rankings
#42Most work-from-homeof 3,14425.4%#70Most expensive homesof 3,139$637,600#75Most educatedof 3,14452.0%#80Highest median rentof 3,137$1,861
The short version

Jefferson County is significantly wealthier than the US average, with a median household income of $110,656. Population has held roughly steady since 2000. 52% of adults hold a bachelor's degree or higher, well above the national rate of 36%. Median home value has roughly tripled since 2000, reaching $637,600. It ranks in the top 1% of US counties for household income.

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
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

PEP 2025 EST:580,451 residents (Census Bureau Vintage 2025, released March 2026)

Population, 1990 – 2024
424K467K511K554K597K1990201020202024Jefferson 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%
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
Our index: median home value divided by median household income. Lower is more affordable.
Gentrification Score
92
Our index, 0 to 100. Higher means faster recent growth in incomes, home values, and college degrees.
RELATED:See current rent listings in Jefferson County on RentDataNow
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)
RANKED:Largest German population · Largest English population · Largest Irish population · Largest Mexican population · Largest Italian population
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%
Self-employed
11.9%
+0.7 ptssince 2009
from 11.2% in 2009
US average: 13.1%
Management & professional
53.7%
−14.3 ptssince 2009
from 68.0% 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%
−42.8 ptssince 2009
from 49.3% 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%
−83.3 ptssince 2013
from 88.6% in 2013
US average: 8.4%
Broadband at home
95.1%
+8.2 ptssince 2017
from 86.9% in 2017
US average: 91.0%
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
Drill deeper

Places similar to Jefferson County

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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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Explore from here

146 census tracts (top 20 by population)
Census Tract 605.01Census Tract 98.37Census Tract 117.24Census Tract 102.09Census Tract 103.08Census Tract 118.03Census Tract 604Census Tract 120.57Census Tract 120.43Census Tract 110Census Tract 120.45Census Tract 120.52Census Tract 120.24Census Tract 98.33Census Tract 98.27Census Tract 104.02Census Tract 120.22Census Tract 102.08Census Tract 104.03Census Tract 109.01
27 ZIP codes
ZIP 80123ZIP 80401ZIP 80127ZIP 80128ZIP 80021ZIP 80003ZIP 80228ZIP 80227ZIP 80004ZIP 80226ZIP 80005ZIP 80214ZIP 80033ZIP 80232ZIP 80002ZIP 80403ZIP 80215ZIP 80007ZIP 80465ZIP 80235ZIP 80433ZIP 80470ZIP 80454ZIP 80453ZIP 80457ZIP 80425ZIP 80419
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DATA: US CENSUS BUREAU ACS 5-YEAR + DECENNIAL CENSUS · UPDATED 2024

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