Petroleum County, Montana

Petroleum County: County in Montana, United States


Petroleum County is a county located in the U.S. state of Montana. As of the 2010 census, the population was 494. After 10 years in 2020 county had an estimated population of 500 inhabitants. Its county seat is Winnett. The county was created 97 years ago in 1925.

Quick Facts about Petroleum County

Population : 500 (2020)
Country : United States of America
State : Montana (United States)
Area : 4336 km2
Water as percent of area : 1.1%
Land as percent of area : 98.9%
Named for : petroleum
Altitude : 3,133 feet / 955 meters
Capital : Winnett
Establishment : January 01, 1926
Time Zone : America/Denver
Local time : 23:16:14 (22nd March 2023)
Population growth : 1.2% (2010-2020)
Petroleum County locator map
Location of Petroleum County on Montana map.
Winnett MT Petroleum County Courthouse '2' image
Winnett MT Petroleum County Courthouse '2'
Winnett MT Petroleum County Courthouse '2' image


Petroleum County is located at 47°7'3"N 108°15'0"W (47.1175100, -108.2501200). It has 5 neighbors: Phillips County, Fergus County, Garfield County, Musselshell County and Rosebud County.

Petroleum County map

Petroleum County Populated Places

Cities, Towns, Neighborhoods & Other Populated Places in Petroleum County.

City Name Population Title
Winnett 190 Town of the United States

Petroleum County has 5 neighbours.

  • Winnett


The population of Petroleum County increased by 1.2% in 10 years.

Year Population % Change Method
2010 494 - census
2011 490 -0.82% estimation process
2012 504 2.78% estimation process
2013 504 0% estimation process
2014 488 -3.28% estimation process
2015 474 -2.95% estimation process
2016 491 3.46% estimation process
2017 512 4.1% estimation process
2018 512 0% estimation process
2019 487 -5.13% estimation process
2020 500 2.6% estimation process

Comitatul Petroleum, Comte de Petroleum, Comté de Petroleum, Condado de Petroleum, Condado han Petroleum, Contea di Petroleum, Hrabstwo Petroleum, Okrug Petrolijum, Petroleum, Petroleum Kun, Petroleum Kūn, Petroleum konderria, Petroleum megye, Pitrolium, Quan Petroleum, Quận Petroleum, mqatʿt btrwlywm, petororiamu jun, petroleyuma ka'unti, shhrstan ptrwlywm mwntana, shi you xian, Округ Петролијум, Петролеум, Питролиъм, Փետրոլեում շրջան, شهرستان پترولیوم، مونتانا, مقاطعة بتروليوم, پٹرولیم کاؤنٹی، مونٹانا, پیٹرولیم کاؤنٹی،مونٹانا, পেট্রোলেয়ুম কাউন্টি, ペトローリアム郡, 石油縣

Montana Other Counties (more counties)

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Flathead County 105,851 County in Montana, United States
Cascade County 81,346 County in central Montana, United States
Missoula 76,848 County seat of Missoula County, Montana, United States
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Great Falls 58,353 Town in Cascade County, Montana, United States
Bozeman 50,970 Town in Gallatin County, Montana, United States
Ravalli County 45,002 County in Montana, United States
Silver Bow County 35,180 County in Montana, United States
Butte 34,190 Consolidated city-county in Montana, United States
Helena 33,737 State capital of Montana, United States and seat of Lewis and Clark County
Lake County 30,986 County in Montana, United States
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