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COUNTY · 2000 CENSUS

Jefferson County

Montana · 10,049 residents · 1,656.997 sq mi
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The short version

Jefferson County has roughly average household income, with a median household income of $41,506. Population has grown 27% since 1990. Median home value has more than doubled since 1990, reaching $127,700. Households here earn about 26% more than the Montana median.

At a glance
Average income
near the US median
US median: $42,589
Older
median age 40.2
US median: 35.2
More educated
28% hold a bachelor's degree
US average: 24%
Less affordable
home values up 51%, inflation adjusted
US median home: $120,530
Section 01

Population & growth

10,049
+27%since 1990
from 7,939 in 1990
1990 – 2025
6 / sq mi
+27%since 1990
from 5 / sq mi in 1990
US average: 242
40.2
+15%since 1990
from 35.1 in 1990
US average: 35.2
Population, 19902024
7K9K10K12K13K1990201020202024Jefferson County
202413K
1990201020202024
Section 02

Income & economy

$41,506
Unchangedinflation adjusted, since 1990
from $31,400 in 1990
US average: $42,589
1990 – 2024
$18,250
+38%since 1990
from $13,233 in 1990
US average: $21,522
9.0%
+1.6 ptssince 1990
from 7.4% in 1990
US average: 12.4%
Section 03

Housing

$127,700
+51%inflation adjusted, since 1990
from $64,000 in 1990
US average: $120,530
1990 – 2024
$419
+6%inflation adjusted, since 1990
from $299 in 1990
US average: $602
83.2%
+2.5 ptssince 1990
from 80.7% in 1990
16.8% rent
3.1
+51%since 1990
from 2.0 in 1990
1990 – 2024
RELATED:See current rent listings in Jefferson County on RentDataNow
Section 04

Race & ethnicity

1990
White, non-Hispanic97.5%(7,744)
Black0%(2)
Hispanic / Latino1%(82)
Asian0.2%(14)
Diversity Score8.4%(668)
2000
White, non-Hispanic95.2%(9,564)
Black0.1%(13)
Hispanic / Latino1.5%(149)
Asian0.4%(42)
Diversity Score5.1%(516)
5
−39%since 1990
from 8 in 1990
1990 – 2024
Section 05

Education

27.7%
+6.8 ptssince 1990
from 20.8% in 1990
US average: 24.4%
High school or higher
90.2%
+8.9 ptssince 1990
from 81.3% in 1990
US average: 80.3%
8.9%
+3.8 ptssince 1990
from 5.2% in 1990
US average: 8.8%
Section 06

Commute & transportation

14.9 min
−26%since 1990
from 20.2 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, Montana?

Jefferson County, Montana has about 10,049 residents according to the 2000 Census.

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

The typical household in Jefferson County, Montana earns about $41,506 a year. Half of households make more than that, and half make less.

Is Jefferson County, Montana expensive?

In Jefferson County, Montana, the median home is worth about $127,700, and the typical rent is about $419 a month.

How educated are people in Jefferson County, Montana?

About 27.7% of adults age 25 and over in Jefferson County, Montana hold a bachelor's degree or higher.

What is the poverty rate in Jefferson County, Montana?

About 9.0% of people in Jefferson County, Montana live below the federal poverty line.

Has Jefferson County, Montana grown since 1990?

Yes, Jefferson County, Montana has grown since 1990. The population has added about 2,110 residents, a change of about 27 percent over that period.

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

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