COUNTY · 1990 CENSUS

Jefferson County

Colorado · 438,430 residents · 764 sq mi

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Jefferson County is home to 438,430 people in Colorado. About 31% of adults have finished a four-year degree. That is roughly 30% ahead of the Colorado median. The poverty rate is 5.8%, under the national 13.2%. The median household earns $39,084, about 30% above the national median. The population has fallen 17% since 2000.

At a glance

Wealthier

above the US median

US median: $30,130

Mid-age

median age 33.4

US median: 33.0

More educated

31% hold a bachelor's degree

US average: 20%

More affordable

home values down 33%, inflation adjusted

US median home: $93,722

Section 01

Population & growth

Total population

438,430

−17%vs 2000

vs 527,056 in 2000

1990 – 2025

Median age

33.4

−9%vs 2000

vs 36.8 in 2000

US average: 33.0

Land area

764 sq mi

Population, 1990 – 2024

2024579K

Age distribution, 1990

Under 57.6%(33,366)

US avg: 7.3%

5 to 97.7%(33,588)

US avg: 7.3%

10 to 147.1%(31,048)

US avg: 6.9%

15 to 196.6%(28,981)

US avg: 7.1%

20 to 245.7%(25,056)

US avg: 7.5%

25 to 3418.6%(81,683)

US avg: 17.5%

35 to 4419.1%(83,832)

US avg: 15.1%

45 to 5411.8%(51,610)

US avg: 10.2%

55 to 647.7%(33,629)

US avg: 8.5%

65 to 745%(22,105)

US avg: 7.3%

75 to 842.4%(10,508)

US avg: 4%

85 and over0.7%(3,024)

US avg: 1.2%

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Section 02

Income & economy

Median household income

$39,084

−10%inflation adjusted, since 2000

vs $57,339 in 2000

US average: $30,130

1990 – 2024

Per capita income

$17,310

−38%vs 2000

vs $28,066 in 2000

US average: $14,340

Poverty rate

5.8%

+0.6 ptsvs 2000

vs 5.2% in 2000

US average: 13.2%

Section 03

Housing

Median home value

$93,400

−33%inflation adjusted, since 2000

vs $184,200 in 2000

US average: $93,722

1990 – 2024

Median gross rent

$476

−17%inflation adjusted, since 2000

vs $760 in 2000

US average: $450

Owner-occupied

70.1%

−2.4 ptsvs 2000

vs 72.5% in 2000

29.9% rent

Section 04

Race & ethnicity

2000

White, non-Hispanic84.9%(447,416)

Black0.8%(4,312)

Hispanic / Latino10%(52,449)

Asian2.2%(11,855)

Other0%

1990

White, non-Hispanic94.8%(415,474)

Black0.6%(2,721)

Hispanic / Latino6.8%(29,615)

Asian1.7%(7,613)

Other2.9%(12,622)

No data for the years selected.

Section 04 · Origins

Detailed origins & ancestry

Detailed origin tables are available for 2024; showing 2024 data.

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)

Paraguayan0%(51)

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)

Indonesian0%(73)

Sri Lankan0%(68)

Mien0%(34)

Burmese0%(28)

Okinawan0%(10)

Malaysian0%(9)

Pacific Islander origin

Native Hawaiian0.1%(752)

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)

Subsaharan African0.4%(2,162)

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)

Macedonian0%(90)

Haitian0%(83)

Barbadian0%(73)

Trinidadian & Tobagonian0%(45)

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

30.7%

−5.8 ptsvs 2000

vs 36.5% in 2000

US average: 20.3%

High school or higher

89.8%

−2.0 ptsvs 2000

vs 91.8% in 2000

US average: 75.2%

Graduate degree

9.5%

−2.5 ptsvs 2000

vs 12.1% in 2000

US average: 7.1%

Section 06

Commute & transportation

Average commute

24.0 min

+30%vs 2000

vs 18.5 min in 2000

US average: 21.9

Section 07

Work & employment

No data for the years selected.

Section 08

People & community

No data for the years selected.

Marital status (2024)

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

Showing 2024 (the nearest year with coverage data).

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

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