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COUNTY

Custer County

Idaho · 4,636 residents (2025 est.) · 4,922.177 sq mi
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#5Oldest by median ageof 3,14460.0#31Most work-from-homeof 3,14427.3%
The short version

Custer County has lower-than-average household income, with a median household income of $67,574. Population has held roughly steady since 2000. Median home value has more than tripled since 2000, reaching $381,700. With a median age of 60.0, the population is older than the US median of 38.9.

At a glance
Lower income
below the US median
US median: $82,259
Older
median age 60.0
US median: 38.9
Less educated
29% hold a bachelor's degree
US average: 36%
Less affordable
home values up 134%, inflation adjusted
US median home: $376,019
Section 01

Population & growth

Total population
4,470
+3%since 2000
from 4,342 in 2000
1990 – 2025
Population density
1 / sq mi
+8%since 2009
from 1 / sq mi in 2009
US average: 281
Median age
60.0
+46%since 2000
from 41.2 in 2000
US average: 38.9

PEP 2025 EST:4,636 residents (Census Bureau Vintage 2025, released March 2026)

Population, 1990 – 2024
4K4K4K4K5K1990201020202024Custer County
20244K
1990201020202024
Age distribution, 2024
Under 53.1%(139)
US avg: 5.6%
5 to 93.6%(160)
US avg: 6%
10 to 144.8%(213)
US avg: 6.4%
15 to 192.9%(128)
US avg: 6.6%
20 to 243.4%(152)
US avg: 6.5%
25 to 344.4%(198)
US avg: 13.7%
35 to 447.8%(350)
US avg: 13.2%
45 to 5414%(624)
US avg: 12.2%
55 to 6419.5%(872)
US avg: 12.7%
65 to 7422%(984)
US avg: 10.2%
75 to 8412.2%(545)
US avg: 5.1%
85 and over2.3%(105)
US avg: 1.9%
BAR + DOT: THIS PLACE · TICK: US AVERAGE
Section 02

Income & economy

Median household income
$67,574
+15%inflation adjusted, since 2000
from $32,174 in 2000
US average: $82,259
1990 – 2024
Per capita income
$31,839
+102%since 2000
from $15,783 in 2000
US average: $44,673
Households earning $100K+
43.0%
+18.5 ptssince 2009
from 24.5% in 2009
US average: 53.3%
Poverty rate
15.8%
+1.5 ptssince 2000
from 14.3% in 2000
US average: 12.5%
Income inequality (Gini)
0.422
+2%since 2010
from 0.414 in 2010
US average: 0.476
Workforce by industry, 2024
Information13.8%
US avg: 10.8%
Agriculture, forestry, fishing10.7%
US avg: 1.6%
Construction9.3%
US avg: 1.2%
Wholesale trade8.3%
US avg: 6.9%
Finance & insurance5.6%
US avg: 5.9%
Other services5.3%
US avg: 6.7%
Retail trade4.7%
US avg: 9.9%
Professional, scientific, technical3.7%
US avg: 5.1%
Public administration2.9%
US avg: 4.8%
Education & health services1.9%
US avg: 0.9%
Manufacturing1.4%
US avg: 0.4%
Arts, entertainment, food0.6%
US avg: 1.9%
Transportation & warehousing0%
US avg: 2.2%
BAR + DOT: THIS PLACE · TICK: US AVERAGE
Section 03

Housing

Median home value
$381,700
+134%inflation adjusted, since 2000
from $89,700 in 2000
US average: $376,019
1990 – 2024
Median gross rent
$691
Unchangedinflation adjusted, since 2000
from $378 in 2000
US average: $1,442
Owner-occupied
76.8%
+1.9 ptssince 2000
from 74.9% in 2000
23.2% rent
Vacancy rate
38.1%
+5.0 ptssince 2009
from 33.1% in 2009
US average: 10.0%
Owner cost-burdened
18.9%
−5.3 ptssince 2009
from 24.2% in 2009
US average: 22.9%
Renter cost-burdened
25.1%
+6.7 ptssince 2009
from 18.4% in 2009
US average: 47.4%
Afford Score
5.6
+80%since 2009
from 3.1 in 2009
2009 – 2024
Our index: median home value divided by median household income. Lower is more affordable.
Gentrification Score
70
Our index, 0 to 100. Higher means faster recent growth in incomes, home values, and college degrees.
RELATED:See current rent listings in Custer County on RentDataNow
Section 04

Race & ethnicity

2000
White, non-Hispanic94.4%(4,100)
Black0%(0)
Hispanic / Latino4.2%(183)
Asian0%(1)
Other0%
2024
White, non-Hispanic88.4%(3,950)
Black0.3%(14)
Hispanic / Latino4.5%(201)
Asian3.1%(137)
Other3.8%(168)
Diversity Score
27
+162%since 2009
from 10 in 2009
2009 – 2024
Our index, 0 to 100. Higher means a more even mix of racial and ethnic groups.
Section 04 · Origins

Detailed origins & ancestry

Hispanic origin
Mexican3%(134)
Salvadoran1.1%(50)
Asian origin
Filipino2.7%(119)
Japanese0.1%(4)
Chinese0.1%(3)
Vietnamese0.1%(3)
Korean0%(1)
Ancestry
English34.2%(1,527)
German20%(893)
Irish10.4%(467)
Scottish6.9%(308)
Swedish5.3%(237)
Danish5.1%(226)
American4.6%(206)
Norwegian2.9%(129)
French2.4%(107)
Scotch-Irish1.8%(82)
Swiss1.7%(75)
Dutch1.3%(56)
+ 12 more ancestry groups with data
Welsh0.9%(41)
Polish0.9%(39)
Austrian0.7%(32)
Italian0.5%(24)
British0.5%(23)
Croatian0.4%(20)
Finnish0.2%(11)
Russian0.2%(8)
Greek0.1%(6)
Canadian0.1%(4)
RANKED:Largest English population · Largest German population · Largest Irish population · Largest Scottish population · Largest Swedish population
Section 05

Education

Bachelor's degree or higher
29.3%
+11.9 ptssince 2000
from 17.4% in 2000
US average: 35.6%
High school or higher
93.9%
+9.4 ptssince 2000
from 84.5% in 2000
US average: 89.6%
Graduate degree
6.9%
+2.4 ptssince 2000
from 4.5% in 2000
US average: 14.0%
Section 06

Commute & transportation

Average commute
17.3 min
−24%since 2000
from 22.7 min in 2000
US average: 26.5
Drive alone to work
57.1%
+2.3 ptssince 2009
from 54.8% in 2009
US average: 68.9%
Carpooled to work
12.3%
−8.4 ptssince 2009
from 20.7% in 2009
US average: 8.5%
Public transit
1.1%
−0.5 ptssince 2009
from 1.6% in 2009
US average: 3.2%
Worked from home
27.3%
+18.0 ptssince 2009
from 9.4% in 2009
US average: 15.0%
Walked to work
2.1%
−9.7 ptssince 2009
from 11.8% in 2009
US average: 2.4%
Biked to work
0.1%
−0.2 ptssince 2009
from 0.3% in 2009
US average: 0.4%
No vehicle available
3.7%
+1.7 ptssince 2009
from 1.9% in 2009
US average: 8.3%
Section 07

Work & employment

Unemployment rate
2.0%
−4.2 ptssince 2011
from 6.2% in 2011
US average: 5.2%
Labor force participation
49.0%
−15.6 ptssince 2011
from 64.6% in 2011
US average: 63.5%
Self-employed
17.2%
+2.6 ptssince 2009
from 14.6% in 2009
US average: 13.1%
Management & professional
29.9%
−33.3 ptssince 2009
from 63.2% in 2009
US average: 42.5%
Section 08

People & community

Male
51.9%
−1.3 ptssince 2009
from 53.2% in 2009
Female
48.1%
+1.3 ptssince 2009
from 46.8% in 2009
Foreign born
4.8%
+3.0 ptssince 2009
from 1.8% in 2009
US average: 14.1%
Veterans
11.2%
−38.9 ptssince 2009
from 50.1% in 2009
US average: 6.2%
With a disability
24.8%
+5.3 ptssince 2012
from 19.5% in 2012
US average: 13.3%
Uninsured
12.1%
−74.9 ptssince 2013
from 87.0% in 2013
US average: 8.4%
Broadband at home
85.9%
+11.1 ptssince 2017
from 74.8% in 2017
US average: 91.0%
English only at home
96.4%
−1.1 ptssince 2016
from 97.4% in 2016
US average: 77.7%
Spanish at home
2.8%
+0.6 ptssince 2016
from 2.2% in 2016
US average: 13.6%
Marital status
Men 15+
Never married16.6%(341)
Married57%(1,174)
Widowed9%(186)
Divorced17.3%(357)
Women 15+
Never married14.6%(277)
Married60.5%(1,150)
Widowed8.4%(160)
Divorced16.5%(313)
SHARE WITHIN EACH SEX · POPULATION 15 AND OVER · 2024
Drill deeper

Places similar to Custer County

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Pop 4,632
Washington County
Pop 4,732
Scott County
Pop 4,866
Phillips County
Pop 4,420
Places similar to Custer County
Head to head

Compare Custer County to nearby counties

CUSTER COUNTY VS
Lemhi County
Income$53,202−21%
Home value$326,100−15%
Population8,474+83%
SEE FULL COMPARISON →
CUSTER COUNTY VS
Camas County
Income$57,955−14%
Home value$304,000−20%
Population1,316−72%
SEE FULL COMPARISON →
CUSTER COUNTY VS
Blaine County
Income$92,566+37%
Home value$735,300+93%
Population25,517+450%
SEE FULL COMPARISON →
CUSTER COUNTY VS
Butte County
Income$53,015−22%
Home value$217,600−43%
Population2,783−40%
SEE FULL COMPARISON →
Frequently asked

How many people live in Custer County, Idaho?

Custer County, Idaho has about 4,470 residents according to the 2024 American Community Survey.

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

The typical household in Custer County, Idaho earns about $67,574 a year. Half of households make more than that, and half make less.

Is Custer County, Idaho expensive?

In Custer County, Idaho, the median home is worth about $381,700, and the typical rent is about $691 a month.

How educated are people in Custer County, Idaho?

About 29.3% of adults age 25 and over in Custer County, Idaho hold a bachelor's degree or higher.

What is the poverty rate in Custer County, Idaho?

About 15.8% of people in Custer County, Idaho live below the federal poverty line.

Has Custer County, Idaho grown since 1990?

Yes, Custer County, Idaho has grown since 1990. The population has added about 337 residents, a change of about 8 percent over that period.

Keep going

Explore from here

1 census tract
Census Tract 9602
5 ZIP codes
ZIP 83226ZIP 83251ZIP 83278ZIP 83227ZIP 83235
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DATA: US CENSUS BUREAU ACS 5-YEAR + DECENNIAL CENSUS · UPDATED 2024

How we source and harmonize this data →