United States › Colorado › Jefferson County COUNTY · 2000 CENSUS
Jefferson County Colorado · 527,056 residents · 764 sq mi
Time machine
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The short version
Jefferson County is a county of 527,056 people in Colorado. This is an unusually credentialed place: 37% of adults have a four-year degree. The typical home is worth $184,200, having more than doubled since 1990. The poverty rate is 5.2%, under the national 12.4%. Households here earn about 21% more than in Colorado as a whole. The median household earns $57,339, about 35% above the national median.
At a glance
Wealthier
above the US median
US median: $42,589
Mid-age
median age 36.8
US median: 35.2
More educated
37% hold a bachelor's degree
US average: 24%
Less affordable
home values up 50%, inflation adjusted
US median home: $120,530
Section 01
Population & growth from 33.4 in 1990
US average: 35.2
Population, 1990 – 2024
424K 467K 511K 554K 597K 1990 2000 2010 2020 2024 Jefferson County Age distribution, 2000
BAR + DOT: THIS PLACE · TICK: US AVERAGE
Section 02
Income & economy $57,339
+11%inflation adjusted, since 1990
from $39,084 in 1990
US average: $42,589
from $17,310 in 1990
US average: $21,522
from 5.8% in 1990
US average: 12.4%
$184,200
+50%inflation adjusted, since 1990
from $93,400 in 1990
US average: $120,530
$760
+21%inflation adjusted, since 1990
from $476 in 1990
US average: $602
from 70.1% in 1990
27.5% rent
Section 04
Race & ethnicity 1990
White, non-Hispanic 94.8%(415,474)
Hispanic / Latino 6.8%(29,615)
2000
White, non-Hispanic 84.9%(447,416)
Hispanic / Latino 10%(52,449)
No data for the years selected.
Section 04 · Origins
Detailed origins & ancestry Detailed origin tables are available for 2024; showing 2024 data.
Hispanic origin
+ 10 more hispanic origin groups with data Asian origin
+ 9 more asian origin groups with data Ancestry
+ 47 more ancestry groups with data from 30.7% in 1990
US average: 24.4%
High school or higher
from 89.8% in 1990
US average: 80.3%
from 9.5% in 1990
US average: 8.8%
Section 06
Commute & transportation from 24.0 min in 1990
US average: 17.6
Section 07
Work & employment No data for the years selected.
Section 08
People & community No data for the years selected.
Marital status
Men 15+
Never married 27.7%(57,124)
Women 15+
Never married 21.5%(45,469)
SHARE WITHIN EACH SEX · POPULATION 15 AND OVER · 2000
Section 09
Health coverage Showing 2024 (the nearest year with coverage data).
from 11.4% in 2013
US average: 8.4%
from 63.7% in 2020
US average: 54.8%
Direct-purchase
from 15.3% in 2020
US average: 13.8%
from 17.2% in 2020
US average: 18.4%
from 13.2% in 2020
US average: 20.9%
VA health care
from 2.0% in 2020
US average: 2.2%
Any private
from 76.9% in 2020
US average: 67.1%
Any public
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)
Gulf War (1990s) 22.2%(6,769)
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.
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Drill deeper
Places similar to Jefferson County Head to head
Compare Jefferson County to nearby counties JEFFERSON COUNTY VS
Denver County
Income $94,718 +65%
Home value $616,000 +234%
Population 740,613 +28%
SEE FULL COMPARISON →
JEFFERSON COUNTY VS
Clear Creek County
Income $94,577 +65%
Home value $608,500 +230%
Population 8,994 −98%
SEE FULL COMPARISON →
JEFFERSON COUNTY VS
Douglas County
Income $149,594 +161%
Home value $713,600 +287%
Population 399,396 −31%
SEE FULL COMPARISON →
JEFFERSON COUNTY VS
Gilpin County
Income $95,361 +66%
Home value $573,900 +212%
Population 6,073 −99%
SEE FULL COMPARISON →
Frequently asked
How many people live in Jefferson County, Colorado? Jefferson County, Colorado has about 527,056 residents according to the 2000 Census.
What is the median household income in Jefferson County, Colorado? The typical household in Jefferson County, Colorado earns about $57,339 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 $184,200, and the typical rent is about $760 a month.
How educated are people in Jefferson County, Colorado? About 36.5% 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 5.2% 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 88,626 residents, a change of about 20 percent over that period.
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