| ZIP Codes: | 3 ZIP Codes (3 Standard, 0 PO Box, 0 Unique) [See All] |
| Area Codes: | 208 / 986 |
| Timezone: | Mountain (GMT -07:00) |
| Local Time: | 2:11:56 PM |
| Population: | 2,957 [See All] |
| FIPS: | 16023 |
| CBSA: | Idaho Falls, ID |
| Land Area: | 2,279 sq mi |
| Water Area: | 2 sq mi |
| Coordinates: | 43.7621, -113.2266 |
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2,957 residents live across 3 ZIPs covering 2,279 sq mi, served by 3 distinct USPS-recognized cities.
Population moved from 2,998 to 2,957 from 2014 to 2024 — a -1.4% change. 2 ZIPs gained residents, 1 lost.
The county's wealthiest ZIP 83255 (Moore, $70,714 median) and poorest ZIP 83213 (Arco, $43,472) are 26.3 miles apart — a 1.6× income gap across local geography.
Median home values vary 1.7× across this county — from $163,800 in 83213 (Arco) to $283,200 in 83255 (Moore).
Educational attainment ranges from 4.6% bachelor's+ in 83244 (Howe) to 21.9% in 83213 (Arco) — the breadth of educational profiles across the area.
Within Idaho, this is the #43 most populous of 46 counties and ranks #44 for median household income .
Weighted by population, the typical household earns about $56,420 across the county — reflecting what a typical resident sees, not a simple ZIP average.
18.9% of adults age 25+ hold a bachelor's degree or higher (394 of 2,088 reporting).
3 Standard delivery, 0 PO Box only, 0 single-entity Unique ZIPs serve this county.
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.