Petroleum County, county in Montana, United States. As of 2020 county had an estimated population of 500 inhabitants. The county was created 98 years ago in 1926. Its county seat is Winnett.
There are 1 city/town in Petroleum County, MT. The largest city of Petroleum County is Winnett with a population of 190.
Winnett, Town of the United States
List of cities, towns, neighborhoods & other populated places in Petroleum County.
| City Name | Title | Population |
|---|---|---|
| Winnett | Town of the United States | 190 |
