ZIP Codes of Caribou County, ID

Population & People
Population & People
Total Population
232
Household Income
Household Income
Median Income
$59,200
Housing
Housing
Total Housing Units
152
Business & Economy
Business & Economy
Total Businesses
194
Employment
Employment
Employment Rate
87.85%
Education
Education
Bachelor's Degree+
14.92%
Source: U.S. Census ACS 2024 5-Year Estimates · rolled up across the 1 ZIPs in this county.
Data Last Updated: July 1, 2026
ZIP Codes:4 ZIP Codes (4 Standard, 0 PO Box, 0 Unique) [See All]
Area Codes:208 / 986
Timezone:Mountain (GMT -07:00)
Local Time:11:53:14 PM
Population:232 [See All]
FIPS:16029
Land Area:2,021 sq mi
Water Area:33 sq mi
Coordinates:43.0174, -111.0345
Quick Link:
https://www.zip-codes.com/county/id-caribou.asp
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Notable population decline
Lost 72.8% of residents since 2014.
Idaho's most foreign-born county
19.4% of residents are foreign-born.
Idaho's longest commutes
39-minute average travel time to work.
Striking education divide
Bachelor's share spans 15.6% to 62.5% — a 47-point gap.
Among Idaho's 5 most renter-heavy counties
40.5% of homes rented — #4 statewide.

Standout ZIPs in this County


Most Populous
Soda Springs · 4,155 people
55.9% of county total
Highest Income
Bancroft · $74,688 median
1.1× county average
Largest Land Area
Wayan · 739.1 sq mi
Spans the most ground
Fastest Growth
Grace · 21.8% (10-yr)
2,042 → 2,488 residents
Most Educated
Grace · 16.8% bachelor's+
289 of 1,724 adults 25+

Things worth knowing about Caribou County


7,435 residents live across 4 ZIPs covering 2,021 sq mi, served by 4 distinct USPS-recognized cities.

Population moved from 6,983 to 7,435 from 2014 to 2024 — a +6.5% change. 2 ZIPs gained residents, 2 lost.

The county's wealthiest ZIP 83217 (Bancroft, $74,688 median) and poorest ZIP 83276 (Soda Springs, $64,750) are 22.9 miles apart — a 1.2× income gap across local geography.

Median home values vary 1.2× across this county — from $215,200 in 83241 (Grace) to $259,500 in 83217 (Bancroft).

Density varies 102× across the county — from 0 people/sq mi in 83285 (Wayan) to 11 in 83241 (Grace).

Educational attainment ranges from 15.6% bachelor's+ in 83276 (Soda Springs) to 62.5% in 83285 (Wayan) — the breadth of educational profiles across the area.

Within Idaho, this is the #28 most populous of 28 counties and ranks #24 for median household income .

Weighted by population, the typical household earns about $67,927 across the county — reflecting what a typical resident sees, not a simple ZIP average.

17.8% of adults age 25+ hold a bachelor's degree or higher (862 of 4,844 reporting).

4 Standard delivery, 0 PO Box only, 0 single-entity Unique ZIPs serve this county.

Stories about Caribou County


Big & sparse

A frontier county — vast land area with only a few residents per square mile. Daily life looks very different here than in the country's denser counties.

Total area
2,021
square miles
Avg density
3.7
people per sq mi
Population
7,435
across 4 ZIPs
Wayan
739.1 sq mi
80 residents
Soda Springs
620.4 sq mi
4,155 residents
Bancroft
435.1 sq mi
712 residents

Population decline

Caribou County lost 72.8% of residents between 2014 and 2024.

All ZIP Codes in Caribou County


ZIPCityTypePopulationMedian IncomeArea (sq mi)10-yr Growth
83276Soda SpringsStandard4,155$64,750620.45.3%
83241GraceStandard2,488$71,298226.021.8%
83217BancroftStandard712$74,688435.1-9.0%
83285WayanStandard80739.1-62.4%

Adjacent & Nearby Counties