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COUNTY · 2000 CENSUS

Jefferson County

Kansas · 18,426 residents · 532.626 sq mi
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The short version

Jefferson County has roughly average household income, with a median household income of $45,535. Population has grown 16% since 1990. Median home value has more than doubled since 1990, reaching $86,900.

At a glance
Wealthier
above the US median
US median: $42,589
Older
median age 38.0
US median: 35.2
Less educated
18% hold a bachelor's degree
US average: 24%
Less affordable
home values up 39%, inflation adjusted
US median home: $120,530
Section 01

Population & growth

18,426
+16%since 1990
from 15,905 in 1990
1990 – 2025
35 / sq mi
+16%since 1990
from 30 / sq mi in 1990
US average: 242
38.0
+8%since 1990
from 35.2 in 1990
US average: 35.2
Population, 19902024
16K17K18K18K19K1990201020202024Jefferson County
202418K
1990201020202024
Section 02

Income & economy

$45,535
+19%inflation adjusted, since 1990
from $29,048 in 1990
US average: $42,589
1990 – 2024
$19,373
+58%since 1990
from $12,267 in 1990
US average: $21,522
6.7%
−1.9 ptssince 1990
from 8.6% in 1990
US average: 12.4%
Section 03

Housing

$86,900
+39%inflation adjusted, since 1990
from $47,600 in 1990
US average: $120,530
1990 – 2024
$447
+4%inflation adjusted, since 1990
from $327 in 1990
US average: $602
84.8%
+0.9 ptssince 1990
from 83.9% in 1990
15.2% rent
1.9
+16%since 1990
from 1.6 in 1990
1990 – 2024
RELATED:See current rent listings in Jefferson County on RentDataNow
Section 04

Race & ethnicity

1990
White, non-Hispanic98%(15,592)
Black0.4%(65)
Hispanic / Latino1.4%(218)
Asian0.2%(35)
Diversity Score8.1%(1,280)
2000
White, non-Hispanic96%(17,683)
Black0.4%(65)
Hispanic / Latino1.3%(236)
Asian0.2%(30)
Diversity Score4.5%(834)
5
−44%since 1990
from 8 in 1990
1990 – 2024
Section 05

Education

17.9%
+4.4 ptssince 1990
from 13.5% in 1990
US average: 24.4%
High school or higher
88.9%
+7.8 ptssince 1990
from 81.0% in 1990
US average: 80.3%
6.0%
+1.4 ptssince 1990
from 4.6% in 1990
US average: 8.8%
Section 06

Commute & transportation

21.0 min
−27%since 1990
from 29.0 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.

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Frequently asked

How many people live in Jefferson County, Kansas?

Jefferson County, Kansas has about 18,426 residents according to the 2000 Census.

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

The typical household in Jefferson County, Kansas earns about $45,535 a year. Half of households make more than that, and half make less.

Is Jefferson County, Kansas expensive?

In Jefferson County, Kansas, the median home is worth about $86,900, and the typical rent is about $447 a month.

How educated are people in Jefferson County, Kansas?

About 17.9% of adults age 25 and over in Jefferson County, Kansas hold a bachelor's degree or higher.

What is the poverty rate in Jefferson County, Kansas?

About 6.7% of people in Jefferson County, Kansas live below the federal poverty line.

Has Jefferson County, Kansas grown since 1990?

Yes, Jefferson County, Kansas has grown since 1990. The population has added about 2,521 residents, a change of about 16 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 →