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Sweet Grass County, Montana facts for kids

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Sweet Grass County
Carnegie library designed by Link & Haire in Big Timber, Montana
Carnegie library designed by Link & Haire in Big Timber, Montana
Map of Montana highlighting Sweet Grass County
Location within the U.S. state of Montana
Map of the United States highlighting Montana
Montana's location within the U.S.
Country  United States
State  Montana
Founded 1895
Named for Sweet grass
Seat Big Timber
Largest city Big Timber
 • Total 1,862 sq mi (4,820 km2)
 • Land 1,855 sq mi (4,800 km2)
 • Water 6.8 sq mi (18 km2)  0.4%
 • Total 3,678
 • Density 1.9753/sq mi (0.76267/km2)
Time zone UTC−7 (Mountain)
 • Summer (DST) UTC−6 (MDT)
Congressional district At-large
  • Montana county number 40

Sweet Grass County is a county located in the U.S. state of Montana. As of the 2020 census, the population was 3,678. Its county seat is Big Timber. The county was founded in 1895.


According to the U.S. Census Bureau, the county has a total area of 1,862 square miles (4,820 km2), of which 1,855 square miles (4,800 km2) is land and 6.8 square miles (18 km2) (0.4%) is water.

Major highways

Adjacent counties

National protected areas

  • Custer National Forest (part)
  • Gallatin National Forest (part)
  • Lewis and Clark National Forest (part)


Historical population
Census Pop.
1900 3,086
1910 4,029 30.6%
1920 4,926 22.3%
1930 3,944 −19.9%
1940 3,719 −5.7%
1950 3,621 −2.6%
1960 3,290 −9.1%
1970 2,980 −9.4%
1980 3,216 7.9%
1990 3,154 −1.9%
2000 3,609 14.4%
2010 3,651 1.2%
2020 3,678 0.7%
US Decennial Census
1790-1960 1900-1990
1990-2000 2010-2020

2010 census

As of the 2010 United States Census, there were 3,651 people, 1,590 households, and 1,045 families in the county. The population density was 2.0 inhabitants per square mile (0.77/km2). There were 2,148 housing units at an average density of 1.2 per square mile (0.46/km2). The racial makeup of the county was 96.6% white, 0.7% Asian, 0.4% American Indian, 0.1% black or African American, 0.6% from other races, and 1.5% from two or more races. Those of Hispanic or Latino origin made up 1.4% of the population. In terms of ancestry, 25.3% were German, 22.6% were Norwegian, 13.0% were American, 12.8% were Irish, 10.8% were English, and 7.3% were Scottish.

Of the 1,590 households, 28.3% had children under the age of 18 living with them, 56.2% were married couples living together, 6.5% had a female householder with no husband present, 34.3% were non-families, and 30.4% of all households were made up of individuals. The average household size was 2.27 and the average family size was 2.82. The median age was 46.6 years.

The median income for a household in the county was $43,723 and the median income for a family was $56,552. Males had a median income of $35,385 versus $25,000 for females. The per capita income for the county was $22,785. About 10.0% of families and 12.1% of the population were below the poverty line, including 17.8% of those under age 18 and 9.9% of those age 65 or over.


The county was the setting of the 2009 sheep-herding documentary Sweetgrass. The film takes place in many counties in Montana but the title comes from the county of Sweet Grass.



Census-designated place

Unincorporated communities

See also

Kids robot.svg In Spanish: Condado de Sweet Grass para niños

Black History Month on Kiddle
Famous African-American Inventors:
Shirley Ann Jackson
Garett Morgan
J. Ernest Wilkins Jr.
Elijah McCoy
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