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COUNTY · 1990 CENSUS

Jefferson County

Idaho · 16,543 residents · 1,093.681 sq mi
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The short version

Jefferson County has lower-than-average household income, with a median household income of $24,421. Population has declined 14% since 2000. 12% of adults hold a bachelor's degree or higher, below the national rate of 20%. Median home value is $54,200. At a median age of 26.4, residents skew younger than the country as a whole.

At a glance
Lower income
below the US median
US median: $30,130
Younger
median age 26.4
US median: 33.0
Less educated
12% hold a bachelor's degree
US average: 20%
More affordable
home values down 20%, inflation adjusted
US median home: $93,722
Section 01

Population & growth

16,543
−14%vs 2000
vs 19,155 in 2000
1990 – 2025
15 / sq mi
−14%vs 2000
vs 18 / sq mi in 2000
US average: 221
26.4
−8%vs 2000
vs 28.8 in 2000
US average: 33.0
Population, 19902024
15K20K25K30K35K1990201020202024Jefferson County
202433K
1990201020202024
Section 02

Income & economy

$24,421
−15%inflation adjusted, since 2000
vs $37,737 in 2000
US average: $30,130
1990 – 2024
$9,055
−35%vs 2000
vs $13,838 in 2000
US average: $14,340
14.3%
+3.9 ptsvs 2000
vs 10.4% in 2000
US average: 13.2%
Section 03

Housing

$54,200
−20%inflation adjusted, since 2000
vs $89,400 in 2000
US average: $93,722
1990 – 2024
$314
−4%inflation adjusted, since 2000
vs $433 in 2000
US average: $450
80.5%
−4.4 ptsvs 2000
vs 84.9% in 2000
19.5% rent
2.2
−6%vs 2000
vs 2.4 in 2000
1990 – 2024
RELATED:See current rent listings in Jefferson County on RentDataNow
Section 04

Race & ethnicity

2000
White, non-Hispanic88.5%(16,955)
Black0.1%(21)
Hispanic / Latino10%(1,907)
Asian0.2%(43)
Other0%
Diversity Score23.4%(4,484)
1990
White, non-Hispanic94.3%(15,594)
Black0%(4)
Hispanic / Latino5.8%(966)
Asian0.3%(55)
Other5.4%(890)
Diversity Score25.1%(4,159)
25
+7%vs 2000
vs 23 in 2000
1990 – 2024
Section 05

Education

11.8%
−3.5 ptsvs 2000
vs 15.2% in 2000
US average: 20.3%
High school or higher
77.6%
−6.8 ptsvs 2000
vs 84.4% in 2000
US average: 75.2%
3.5%
−0.2 ptsvs 2000
vs 3.7% in 2000
US average: 7.1%
Section 06

Commute & transportation

24.5 min
+47%vs 2000
vs 16.7 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, Idaho?

Jefferson County, Idaho has about 16,543 residents according to the 1990 Census.

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

The typical household in Jefferson County, Idaho earns about $24,421 a year. Half of households make more than that, and half make less.

Is Jefferson County, Idaho expensive?

In Jefferson County, Idaho, the median home is worth about $54,200, and the typical rent is about $314 a month.

How educated are people in Jefferson County, Idaho?

About 11.8% of adults age 25 and over in Jefferson County, Idaho hold a bachelor's degree or higher.

What is the poverty rate in Jefferson County, Idaho?

About 14.3% of people in Jefferson County, Idaho 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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