| ZIP Codes: | 2 ZIP Codes (2 Standard, 0 PO Box, 0 Unique) [See All] |
| Area Code: | 406 |
| Timezone: | Mountain (GMT -07:00) |
| Local Time: | 2:12:54 PM |
| Population: | 395 [See All] |
| FIPS: | 30069 |
| Land Area: | 1,462 sq mi |
| Water Area: | 18 sq mi |
| Coordinates: | 47.0930, -108.4251 |
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395 residents live across 2 ZIPs covering 1,462 sq mi, served by 2 distinct USPS-recognized cities.
Population moved from 438 to 395 from 2014 to 2024 — a -9.8% change. 0 ZIPs gained residents, 1 lost.
The county's wealthiest ZIP 59087 (Winnett, $62,813 median) and poorest ZIP 59087 (Winnett, $62,813) are 0.0 miles apart — a 1.0× income gap across local geography.
Within Montana, this is the #56 most populous of 56 counties and ranks #36 for median household income .
Weighted by population, the typical household earns about $62,813 across the county — reflecting what a typical resident sees, not a simple ZIP average.
32.0% of adults age 25+ hold a bachelor's degree or higher (102 of 319 reporting).
2 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.
Petroleum County lost 9.8% of residents between 2014 and 2024.