County
· Montana
Petroleum County
Petroleum County is a county in the U.S. state of Montana. As of the 2020 census, the population was 496, making it the least populous county in Montana and the eighth-least populous in the United States. Its county seat is Winnett. The county's area was partitioned from Fergus County in 1925 to become the last of Montana's 56 counties to be organized.
519 population
(2021)
·
County area: Petroleum
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Cities and towns 1
Reference data (Census of Governments 2022)
- Census ID (PID6)
- 193659
- FIPS state
- 30
- FIPS county
- 069
- FIPS place
- 99069
- Census record name
- COUNTY OF PETROLEUM
- Mailing address
- PO BOX 226, WINNETT 59087