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Petroleum County, Montana

Petroleum County profile, demographic data, and geographic information.

Local Government & Public Administration

Authoritative general-purpose local government units serving this area U.S. Census Bureau GUS (2026) / GMAF
Government Unit Unit Type Jurisdiction Role Contact / Address
COUNTY OF PETROLEUM
GUS Population: 525 (2024)
ID: 193659
County Official County Government
Contact: CLERK
PO BOX 226, WINNETT MT 59087-0226
TOWN OF WINNETT
GUS Population: 197 (2024)
ID: 130013
Municipal Municipal Government Within County
Contact: MAYOR
PO BOX 225, WINNETT MT 59087-0225