Sweet Grass County, Montana

Sweet Grass County: County in Montana, United States


Sweet Grass County is a county located in the U.S. state of Montana. As of the 2010 census, the population was 3,651 and a population density of 1 people per km². After 10 years in 2020 county had an estimated population of 3,684 inhabitants. Its county seat is Big Timber. The county was created 129 years ago in 1894.

Sweet Grass County locator map
Location of Sweet Grass County on Montana map.

Quick Facts about Sweet Grass County

Population : 3,684 (2020)
Country : United States of America
State : Montana (United States)
Area : 4823 km2
Water as percent of area : 0.4%
Land as percent of area : 99.6%
Named for : Hierochloe odorata
Altitude : 4,137 feet / 1261 meters
Capital : Big Timber
Establishment : January 01, 1895
Time Zone : America/Denver
Local time : 15:36:21 (12th April 2024)
Density : 1 Pop. per km² as of 2020
Population growth : 0.9% (2010-2020)
Carneige Library Big Timber Montana 02 image
Carneige Library Big Timber Montana 02
Carneige Library Big Timber Montana 02 image


Sweet Grass County is located at 45°48'49"N 109°56'28"W (45.8137300, -109.9410500). It has 2 neighbors: Meagher County and Wheatland County.

Sweet Grass County map

The largest city of Sweet Grass County is Big Timber with a population of 1,688. . See all Sweet Grass County cities & populated places.

Sweet Grass County Populated Places

Cities, towns, neighborhoods & other populated places in Sweet Grass County.

City Name Population Title
Big Timber 1,688 City in and county seat of Sweet Grass County, Montana, United States

Sweet Grass County has 2 neighbours.

  • Big Timber


The population of Sweet Grass County increased by 0.9% in 10 years.

Year Population % Change Method
2010 3,651 - census
2011 3,585 -1.84% estimation process
2012 3,581 -0.11% estimation process
2013 3,658 2.1% estimation process
2014 3,639 -0.52% estimation process
2015 3,620 -0.52% estimation process
2016 3,616 -0.11% estimation process
2017 3,676 1.63% estimation process
2018 3,703 0.73% estimation process
2019 3,737 0.91% estimation process
2020 3,684 -1.44% estimation process

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Montana Other Counties (more counties)

County Name Population Title
Yellowstone County 162,990 County in Montana, United States of America
Missoula County 121,630 County in Montana, United States
Billings 117,445 The most populous city in Montana.
Gallatin County 116,806 County in Montana, United States
Flathead County 105,851 County in Montana, United States
Cascade County 81,346 County in central Montana, United States
Missoula 76,848 The most populous city in Missoula County, Montana.
Lewis and Clark County 70,229 County in Montana, United States
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
Kalispell 25,329 City in Flathead County, Montana, United States