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COUNTY · 2000 CENSUS

Jefferson County

Washington · 25,953 residents · 1,803.728 sq mi
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The short version

Jefferson County has lower-than-average household income, with a median household income of $37,869. Population has grown 29% since 1990. Median home value has risen by half since 1990, reaching $157,400. With a median age of 47.1, the population is older than the US median of 35.2.

At a glance
Lower income
below the US median
US median: $42,589
Older
median age 47.1
US median: 35.2
More educated
28% hold a bachelor's degree
US average: 24%
Less affordable
home values up 34%, inflation adjusted
US median home: $120,530
Section 01

Population & growth

25,953
+29%since 1990
from 20,146 in 1990
1990 – 2025
14 / sq mi
+29%since 1990
from 11 / sq mi in 1990
US average: 242
47.1
+15%since 1990
from 41.1 in 1990
US average: 35.2
Population, 19902024
19K23K27K31K35K1990201020202024Jefferson County
202434K
1990201020202024
Section 02

Income & economy

$37,869
+14%inflation adjusted, since 1990
from $25,197 in 1990
US average: $42,589
1990 – 2024
$22,211
+64%since 1990
from $13,551 in 1990
US average: $21,522
11.3%
−2.2 ptssince 1990
from 13.5% in 1990
US average: 12.4%
Section 03

Housing

$157,400
+34%inflation adjusted, since 1990
from $89,000 in 1990
US average: $120,530
1990 – 2024
$595
+18%inflation adjusted, since 1990
from $384 in 1990
US average: $602
76.2%
+2.3 ptssince 1990
from 73.9% in 1990
23.8% rent
4.2
+18%since 1990
from 3.5 in 1990
1990 – 2024
RELATED:See current rent listings in Jefferson County on RentDataNow
Section 04

Race & ethnicity

1990
White, non-Hispanic95.4%(19,216)
Black0.3%(57)
Hispanic / Latino1.1%(223)
Asian1.1%(216)
Diversity Score13.6%(2,738)
2000
White, non-Hispanic91%(23,628)
Black0.4%(103)
Hispanic / Latino2.1%(535)
Asian1.2%(300)
Diversity Score9.3%(2,409)
9
−32%since 1990
from 14 in 1990
1990 – 2024
Section 05

Education

28.4%
+6.6 ptssince 1990
from 21.8% in 1990
US average: 24.4%
High school or higher
91.6%
+8.9 ptssince 1990
from 82.7% in 1990
US average: 80.3%
10.5%
+4.3 ptssince 1990
from 6.2% in 1990
US average: 8.8%
Section 06

Commute & transportation

18.9 min
−9%since 1990
from 20.7 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.

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Frequently asked

How many people live in Jefferson County, Washington?

Jefferson County, Washington has about 25,953 residents according to the 2000 Census.

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

The typical household in Jefferson County, Washington earns about $37,869 a year. Half of households make more than that, and half make less.

Is Jefferson County, Washington expensive?

In Jefferson County, Washington, the median home is worth about $157,400, and the typical rent is about $595 a month.

How educated are people in Jefferson County, Washington?

About 28.4% of adults age 25 and over in Jefferson County, Washington hold a bachelor's degree or higher.

What is the poverty rate in Jefferson County, Washington?

About 11.3% of people in Jefferson County, Washington live below the federal poverty line.

Has Jefferson County, Washington grown since 1990?

Yes, Jefferson County, Washington has grown since 1990. The population has added about 5,807 residents, a change of about 29 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 →