Caribou County, Idaho Population 2026

Updated April 2026 · US Census ACS 2023 5-Year Estimates · 35th-largest in Idaho

The population of Caribou County, Idaho is 7,118 as of the 2023 American Community Survey, making it the 35th-largest county in Idaho. The median household income is $66,653, the median home value is $220,200, and the median age is 38.0.

The population of Caribou County has grown 3.8% since 2010 (6,971 → 7,239), a +0.27% annualized rate.

Caribou County within Idaho · Source: US Census TIGER/Line via us-atlas

7,118

Population

+0.27%

Annual growth

People / sq mi

$66,653

Median Income

$220,200

Median Home Value

Caribou County covers 1,764 sq mi of land at 4.0 people per square mile.

About Caribou County, ID

Caribou County stands apart on settlement density — it is among the most sparsely settled of US counties, at roughly 4 people per square mile. Caribou County is a county in Idaho with a population of 7,118. It ranks #35 among counties in Idaho by population.

Household earnings are middling, with a median of $66,653 — below the US median of $78,538. The poverty rate is 7.4%, below the national 12.4%. Homes carry a median value of $220,200, with typical rent around $800.

Fewer adults hold degrees here than in most comparable places — 15.5%, below the national 35.0%. Just 4.9% of workers are home-based, below the national 14.0%, and the average commute runs about 21 minutes each way.

Caribou County Population History (2010-2024)

The county of Caribou County had a population of 6,971 in 2010 and 7,239 in 2024, a 3.8% growth over 14 years. The peak was 7,239 in 2024. Average annual growth rate: 0.28%.

Caribou County population, 2010–2024 · Source: U.S. Census Bureau — decennial census & Population Estimates

7,239

Population (2024)

6,971

Population (2010)

7,239

Peak (2024)

0.28%

Avg Annual Growth

Year	Population	Change	Annual %	Source
2010	6,971	-	-	estimate
2011	6,841	-130	-1.86%	estimate
2012	6,770	-71	-1.04%	estimate
2013	6,788	+18	+0.27%	estimate
2014	6,793	+5	+0.07%	estimate
2015	6,732	-61	-0.90%	estimate
2016	6,870	+138	+2.05%	estimate
2017	6,980	+110	+1.60%	estimate
2018	7,019	+39	+0.56%	estimate
2019	7,149	+130	+1.85%	estimate
2020	7,016	-133	-1.86%	estimate
2021	7,115	+99	+1.41%	estimate
2022	7,208	+93	+1.31%	estimate
2023	7,233	+25	+0.35%	estimate
2024	7,239	+6	+0.08%	estimate

Race & Ethnicity

White	91.9%
Black or African American	0.0%
Asian	0.1%
Hispanic or Latino (any race)	2.0%
Two or More Races	0.0%

Age & Sex

38.0

Median Age

48.5%

Female

51.5%

Male

18.0%

Age 65+

Age Distribution

Under 5

6.4%

5–9

6.7%

10–14

8.9%

15–19

7.5%

20–24

6.2%

25–34

10.2%

35–44

12.9%

45–54

11.5%

55–59

5.0%

60–64

6.7%

65–74

10.8%

75–84

5.5%

85+

1.7%

Children (under 15): 22.0% · Seniors (65+): 18.0%

Income & Poverty

Median household income	$66,653$-7,983 vs state
Mean household income	$78,848
Per-capita income	$30,255
Poverty rate	7.4%+0.4% vs state
Unemployment rate	1.8%
Employment-to-population	61.4%

Top Industries by Employment

Professional & business services

24.0%

Agriculture

17.6%

Construction

16.0%

Manufacturing

10.1%

Education & health care

5.1%

Finance & real estate

4.5%

Retail trade

4.1%

Public administration

3.9%

The largest employment sector in Caribou County is professional & business services, accounting for 24.0% of workers.

How residents commute

0.2%

Drive alone

2.6%

Carpool

79.4%

Public transit

4.9%

Work from home

21.1 min

Avg commute

Housing

$220,200$-155,800 vs state

Median home value

$800

Median rent

82.0%

Homeownership rate

3,137

Total housing units

77.5%

Occupied

22.5%

Vacant

18.0%

Renter-occupied

Social & access

92.7%

With health insurance

96.1%

With broadband internet

39.7%

Foreign-born

6.8%

Veterans (18+)

14.1%

With a disability

95.9%

Speak language other than English at home

Education

90.5%

High School+

15.5%

Bachelor's+

Largest cities in Idaho

Boise City (235,701)Meridian (124,865)Nampa (106,289)Idaho Falls (66,672)Caldwell (63,465)Pocatello (57,152)Coeur d'Alene (55,558)Twin Falls (53,219)Post Falls (41,716)Rexburg (39,589)All Idaho cities →

Other counties in Idaho

Ada County (508,052)Canyon County (242,405)Kootenai County (177,736)Bonneville County (127,056)Twin Falls County (92,121)Bannock County (88,457)Madison County (53,578)Bonner County (49,456)Bingham County (48,993)Nez Perce County (42,477)All Idaho counties →

Part of Idaho

Idaho demographic profile All Idaho data →

Metro areas in Idaho

Boise City (790,640)Coeur d'Alene (177,736)Idaho Falls (161,944)Logan (151,746)Twin Falls (116,909)Pocatello (88,457)Lewiston (64,901)All US metros →

County rankings

US Counties by Population Richest US Counties by Median Household Income Expensive US Counties by Home Value Educated US Counties Counties With Highest Poverty Rates Youngest US Counties by Median Age Oldest US Counties by Median Age Cheapest US Counties by Median Home Value Racially Diverse US Counties Counties With Largest Hispanic Population All rankings →

Frequently Asked Questions

Caribou County, Idaho has a population of 7,118 according to the US Census Bureau's 2023 American Community Survey 5-year estimates, making it the 35th-largest county in Idaho. Population density is 4 people per square mile.

The population of Caribou County has grown 3.8% since 2010 (6,971 → 7,239), a +0.27% annualized rate.

The median household income in Caribou County, Idaho is $66,653, with mean (average) household income of $78,848 and per-capita income of $30,255. 7.4% of residents live below the federal poverty level.

In Caribou County, the largest racial and ethnic groups are White (91.9%), Hispanic or Latino (2.0%), Asian (0.1%). Figures are from the US Census Bureau's 2023 ACS 5-year estimates and reflect self-reported responses.

The median age in Caribou County, Idaho is 38.0 years. Residents are 48.5% female and 51.5% male.

The median home value in Caribou County is $220,200 and median monthly rent is $800. 82.0% of occupied housing units are owner-occupied. The county has 3,137 total housing units, 22.5% of which are vacant.

The largest employment sector in Caribou County, Idaho is professional, scientific, and management services, employing 24.0% of workers. The unemployment rate is 1.8%.

Boise City is among the largest cities associated with Caribou County, Idaho, with a population of 235,701.