Petroleum County, Montana

Petroleum County
Petroleum County Courthouse in Winnett
Location within the U.S. state of Montana
Montana's location within the U.S.
Coordinates: 47°07′N 108°16′W / 47.11°N 108.26°W / 47.11; -108.26
Country United States
State Montana
FoundedFebruary 25, 1925
Named forPetroleum fields
SeatWinnett
Largest townWinnett
Area
 • Total1,674 sq mi (4,340 km2)
 • Land1,655 sq mi (4,290 km2)
 • Water19 sq mi (50 km2)  1.1%
Population
 (2020)
 • Total496
 • Density0.30/sq mi (0.11/km2)
Time zoneUTC−7 (Mountain)
 • Summer (DST)UTC−6 (MDT)
Congressional district2nd
Websitepetroleumcountymt.org
  • Montana county number 55

Petroleum County is a county found in the U.S. state of Montana. As of the 2020 United States Census, 496 people lived there,[1] making it the least populous county in Montana and the eighth-least populous in the United States.[2] Its county seat is Winnett.[3] The county's area was split from Fergus County to become the last of Montana's 56 counties to be organized.[4][5]

References

  1. "QuickFacts: Petroleum County, Montana". United States Census Bureau. Retrieved January 5, 2024.
  2. "Top 10: Least Populous Counties, During the Period of 2005-2009". PolicyMap. February 28, 2011. Archived from the original on May 31, 2016. Retrieved July 7, 2013.
  3. "Find a County". National Association of Counties. Retrieved June 7, 2011.
  4. Ellie Arguimbau; Ellen Baumler; Charlene L. Porsild; Brian Shovers (2009). Montana Place Names: From Alzada to Zortman. Montana Historical Society. p. 204. ISBN 978-0-9759196-1-3.
  5. Soils Industry, pp. 1-2