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.
7,118
Population
+0.27%
Annual growth
4
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%.
7,239
Population (2024)
6,971
Population (2010)
7,239
Peak (2024)
0.28%
Avg Annual Growth
| Year | Population |
|---|---|
| 2010 | 6,971 |
| 2011 | 6,841 |
| 2012 | 6,770 |
| 2013 | 6,788 |
| 2014 | 6,793 |
| 2015 | 6,732 |
| 2016 | 6,870 |
| 2017 | 6,980 |
| 2018 | 7,019 |
| 2019 | 7,149 |
| 2020 | 7,016 |
| 2021 | 7,115 |
| 2022 | 7,208 |
| 2023 | 7,233 |
| 2024 | 7,239 |
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
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
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
Other counties in Idaho
Part of Idaho
Metro areas in Idaho
County 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.
Caribou County, ID Climate
Caribou County, ID has an average annual temperature of 4°C (39°F) and receives about 451 mm of precipitation per year. The warmest month is July and the coldest is January. Figures are 1970–2000 climate normals.
4°C
Avg Temp
451
Precip (mm/yr)
Jul
Hottest Month
Jan
Coldest Month
| Month | Avg (°C/°F) | Precip |
|---|---|---|
| January | -9° / 15° | 41 mm |
| February | -7° / 20° | 34 mm |
| March | -2° / 29° | 36 mm |
| April | 3° / 38° | 37 mm |
| May | 9° / 47° | 55 mm |
| June | 13° / 56° | 40 mm |
| July | 17° / 63° | 29 mm |
| August | 17° / 62° | 32 mm |
| September | 12° / 53° | 38 mm |
| October | 6° / 42° | 35 mm |
| November | -2° / 28° | 38 mm |
| December | -9° / 17° | 36 mm |
1970–2000 normals from WorldClim 2.1 (~9 km grid). Precipitation can be less precise near mountains or coastlines, where rainfall varies sharply over short distances.
Best time to visit Caribou County, ID
The most comfortable months to visit Caribou County, ID are typically July, August and June, when temperatures are mildest and rainfall is relatively low. The hottest month is July (around 27°C high). The coldest is January (near -15°C low). May is usually the wettest month.
Where to stay near Caribou County
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Data from the American Community Survey (ACS) 5-Year estimates.
Source: U.S. Census Bureau ACS, 2026.