Caribou County, Idaho

Caribou County population, land area and income

Caribou County had 7,239 residents in the Census Vintage 2024 estimate, on 1,764.2 square miles of land. It ranks 35th of 44 in Idaho by population and 17th by land area. That works out to 4.1 people per square mile, below the US average of 96.3, and in the bottom quarter nationally.

The median county-equivalent in Idaho has 15,019 residents, so Caribou County has 48% of the typical county's population.

Its SAIPE 2023 median household income of $70,183 is above the national county median among 3,143 counties with an estimate.

How Caribou County's population changed since 2020

Caribou County gained 223 residents between the July 2020 and July 2024 estimates, a rise of 3.2%. That ranks 42nd of 44 in Idaho for growth. The median Idaho county changed by +7.2%, and the state as a whole by +8.2%.

Since the April 2020 estimates base, Caribou County recorded 381 births and 322 deaths, a natural change of +59. Net international migration added +17 and net domestic migration, people moving to or from other US counties, came to +131. The largest single component was domestic migration, which added 131 people.

Where Caribou County is

The Census internal point of Caribou County is at 42.786100, -111.544300. It sits in UTM zone 12N. The map shades Idaho's 44 county-equivalents by population change from 2020 to 2024, darker for faster growth, with Caribou County outlined. Dots are towns of 1,000+ people with residents in it.

Towns in Caribou County

One incorporated place of 1,000+ people has residents in Caribou County, 3,162 people together, or 44% of the county. Each figure counts only the part of the town inside Caribou County; towns marked "part" extend into another county. The largest is Soda Springs with 3,162.

Counties bordering Caribou County

The Census 2024 county adjacency file lists 6 neighbors for Caribou County, including 1 across a state line. The most populous is Bonneville County, ID, with 133,644 residents. Distances run between Census internal points in a straight line.

• Bonneville County

  133,644 people

  42 mi N

• Bannock County

  91,010 people

  35 mi W

• Bingham County

  50,889 people

  52 mi NW

• WY

  Lincoln County, WY

  21,000 people

  58 mi SE

• Franklin County

  15,638 people

  45 mi SSW

• Bear Lake County

  6,779 people

  36 mi SSE

Distance to Boise and the nearest big city

Boise is 242.1 miles WNW of Caribou County's internal point in a straight line. The nearest place of 100,000 or more is Salt Lake City, UT (population 217,783), 140.2 miles away. The nearest place of 10,000 or more is Pocatello, ID (population 58,231), 47.0 miles away.

Caribou County FIPS code

The FIPS code of Caribou County is 16029: state code 16 for Idaho plus county code 029. Use it as text, with the leading zero, when joining Census, BLS, or CDC county tables. SAIPE lists its 2023 median household income as $70,183.