| ZIP Codes: | 5 ZIP Codes (5 Standard, 0 PO Box, 0 Unique) [See All] |
| Area Codes: | 307 / 406 |
| Timezone: | Mountain (GMT -07:00) |
| Local Time: | 11:14:05 PM |
| Population: | 143 [See All] |
| FIPS: | 56011 |
| Land Area: | 3,207 sq mi |
| Water Area: | 12 sq mi |
| Coordinates: | 45.2468, -104.3901 |
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1,115 residents live across 5 ZIPs covering 3,207 sq mi, served by 5 distinct USPS-recognized cities.
Population moved from 1,169 to 1,060 from 2014 to 2024 — a -9.3% change. 0 ZIPs gained residents, 3 lost.
The county's wealthiest ZIP 59311 (Alzada, $88,021 median) and poorest ZIP 59332 (Hammond, $32,241) are 20.7 miles apart — a 2.7× income gap across local geography.
Density varies 5× across the county — from 0 people/sq mi in 59311 (Alzada) to 1 in 59324 (Ekalaka).
Educational attainment ranges from 14.0% bachelor's+ in 59311 (Alzada) to 35.7% in 59332 (Hammond) — the breadth of educational profiles across the area.
Within Montana, this is the #61 most populous of 61 counties and ranks #8 for median household income .
Weighted by population, the typical household earns about $57,923 across the county — reflecting what a typical resident sees, not a simple ZIP average.
20.9% of adults age 25+ hold a bachelor's degree or higher (181 of 868 reporting).
5 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.
One ZIP holds the majority of this county's population — a sign of a county built around a single city or town.
Carter County lost 16.9% of residents between 2014 and 2024.