| ZIP Codes: | 7 ZIP Codes (7 Standard, 0 PO Box, 0 Unique) [See All] |
| Area Code: | 406 |
| Timezone: | Mountain (GMT -07:00) |
| Local Time: | 2:12:52 PM |
| Population: | 5,005 [See All] |
| FIPS: | 30015 |
| Land Area: | 3,913 sq mi |
| Water Area: | 26 sq mi |
| Coordinates: | 47.8469, -110.5768 |
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5,005 residents live across 7 ZIPs covering 3,913 sq mi, served by 7 distinct USPS-recognized cities.
Population moved from 4,486 to 5,005 from 2014 to 2024 — a +11.6% change. 4 ZIPs gained residents, 3 lost.
The county's wealthiest ZIP 59420 (Carter, $88,438 median) and poorest ZIP 59460 (Loma, $51,551) are 27.6 miles apart — a 1.7× income gap across local geography.
Median home values vary 2.6× across this county — from $113,000 in 59460 (Loma) to $288,200 in 59450 (Highwood).
Density varies 5× across the county — from 1 people/sq mi in 59420 (Carter) to 2 in 59442 (Fort Benton).
Educational attainment ranges from 14.4% bachelor's+ in 59440 (Floweree) to 48.6% in 59420 (Carter) — the breadth of educational profiles across the area.
Within Montana, this is the #36 most populous of 56 counties and ranks #30 for median household income with the #12 fastest decade growth .
Weighted by population, the typical household earns about $64,722 across the county — reflecting what a typical resident sees, not a simple ZIP average.
25.0% of adults age 25+ hold a bachelor's degree or higher (893 of 3,578 reporting).
7 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.
| ZIP | City | Type | Population | Median Income | Area (sq mi) | 10-yr Growth |
|---|---|---|---|---|---|---|
| 59442 | Fort Benton | Standard | 1,838 | $67,917 | 793.5 | 15.9% |
| 59520 | Big Sandy | Standard | 1,261 | $62,109 | 1,141.6 | -0.4% |
| 59446 | Geraldine | Standard | 629 | $53,750 | 773.4 | 19.8% |
| 59450 | Highwood | Standard | 503 | $70,250 | 336.6 | -4.4% |
| 59440 | Floweree | Standard | 432 | — | 277.4 | 282.3% |
| 59460 | Loma | Standard | 178 | $51,551 | 270.6 | 4.7% |
| 59420 | Carter | Standard | 164 | $88,438 | 319.5 | -45.3% |