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COUNTY · 1990 CENSUS

Jefferson County

Colorado · 438,430 residents · 764.383 sq mi
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The short version

Jefferson County is wealthier than most US places, with a median household income of $39,084. Population has fallen 17% since 2000, a loss of 88,626 residents. 31% of adults hold a bachelor's degree or higher, well above the national rate of 20%. Median home value is $93,400. Poverty is rare here, at 5.8% of residents. Households here earn about 30% more than the Colorado median.

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

438,430
−17%vs 2000
vs 527,056 in 2000
1990 – 2025
574 / sq mi
−17%vs 2000
vs 690 / sq mi in 2000
US average: 221
33.4
−9%vs 2000
vs 36.8 in 2000
US average: 33.0
Population, 19902024
424K467K511K554K597K1990201020202024Jefferson County
2024579K
1990201020202024
Section 02

Income & economy

$39,084
−10%inflation adjusted, since 2000
vs $57,339 in 2000
US average: $30,130
1990 – 2024
$17,310
−38%vs 2000
vs $28,066 in 2000
US average: $14,340
5.8%
+0.6 ptsvs 2000
vs 5.2% in 2000
US average: 13.2%
Section 03

Housing

$93,400
−33%inflation adjusted, since 2000
vs $184,200 in 2000
US average: $93,722
1990 – 2024
$476
−17%inflation adjusted, since 2000
vs $760 in 2000
US average: $450
70.1%
−2.4 ptsvs 2000
vs 72.5% in 2000
29.9% rent
2.4
−26%vs 2000
vs 3.2 in 2000
1990 – 2024
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%
Diversity Score29.7%(156,357)
1990
White, non-Hispanic94.8%(415,474)
Black0.6%(2,721)
Hispanic / Latino6.8%(29,615)
Asian1.7%(7,613)
Other2.9%(12,622)
Diversity Score25.9%(113,441)
26
−13%vs 2000
vs 30 in 2000
1990 – 2024
Section 05

Education

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%
9.5%
−2.5 ptsvs 2000
vs 12.1% in 2000
US average: 7.1%
Section 06

Commute & transportation

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.

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Frequently asked

How many people live in Jefferson County, Colorado?

Jefferson County, Colorado has about 438,430 residents according to the 1990 Census.

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

The typical household in Jefferson County, Colorado earns about $39,084 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 $93,400, and the typical rent is about $476 a month.

How educated are people in Jefferson County, Colorado?

About 30.7% 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 5.8% of people in Jefferson County, Colorado live below the federal poverty line.

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

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