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Prairie County, Montana facts for kids

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Prairie County
Downtown Terry, Montana during a typical snowy day.
Downtown Terry, Montana during a typical snowy day.
Map of Montana highlighting Prairie 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 February 5, 1915
Named for Prairie landscape
Seat Terry
Largest town Terry
Area
 • Total 1,743 sq mi (4,510 km2)
 • Land 1,737 sq mi (4,500 km2)
 • Water 5.8 sq mi (15 km2)  0.3%
Population
 (2020)
 • Total 1,088
 • Estimate 
(2022)
1,107 Increase
 • Density 0.6/sq mi (0.2/km2)
Time zone UTC−7 (Mountain)
 • Summer (DST) UTC−6 (MDT)
Congressional district 2nd
Website (Terry Chamber of Commerce)
  • Montana county number 45

Prairie County is a county located in the state of Montana in the United States. In 2020, about 1,088 people lived there. This makes it one of the smallest counties in Montana by population. The main town and county seat is Terry. Prairie County was formed in 1915 from parts of other counties: Custer, Dawson, and Fallon. The name "Prairie" was chosen because the area has a lot of open grassland.

A sad event happened here in 1938. It was called the Custer Creek train wreck. This accident caused many injuries and fatalities.

Geography of Prairie County

Prairie County covers a total area of about 1,743 square miles (4,514 square kilometers). Most of this area, about 1,737 square miles (4,499 square kilometers), is land. The rest is water, which makes up about 0.3% of the total area.

Main Roads in the County

Two important roads pass through Prairie County:

  • I-94.svg Interstate 94
  • Montana Highway 253

Neighboring Counties

Prairie County shares borders with several other counties:

Population Changes Over Time

Historical population
Census Pop.
1920 3,684
1930 3,941 7.0%
1940 2,410 −38.8%
1950 2,377 −1.4%
1960 2,318 −2.5%
1970 1,752 −24.4%
1980 1,836 4.8%
1990 1,383 −24.7%
2000 1,199 −13.3%
2010 1,179 −1.7%
2020 1,088 −7.7%
2022 (est.) 1,107 −6.1%
U.S. Decennial Census
1790–1960, 1900–1990,
1990–2000, 2010–2020

The population of Prairie County has changed over the years. In 1920, there were 3,684 people. By 2020, the population was 1,088. This shows a decrease in the number of people living in the county over many decades.

Towns and Communities

Prairie County has one main town and several smaller communities.

Main Town

  • Terry is the largest town and the county seat. This means it's where the county government offices are located.

Designated Place

  • Fallon is a census-designated place. This is a special area that the government counts for population, but it's not an officially incorporated town.

Other Small Communities

Images for kids

See also

Kids robot.svg In Spanish: Condado de Prairie (Montana) para niños

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