Sidney, Montana

Sidney, Montana
Richland County courthouse
Nickname: 
Sunrise City
Location of Sidney, Montana
Coordinates: 47°42′55″N 104°10′05″W / 47.71528°N 104.16806°W / 47.71528; -104.16806
CountryUnited States
StateMontana
CountyRichland
Founded1888
Incorporated1911
Area
  Total
3.306 sq mi (8.563 km2)
  Land3.287 sq mi (8.514 km2)
  Water0.019 sq mi (0.049 km2)
Elevation
1,949 ft (594 m)
Population
 (2020)
  Total
6,346
  Density1,859/sq mi (717.9/km2)
Time zoneUTC–7 (Mountain (MST))
  Summer (DST)UTC–6 (MDT)
ZIP Code
59270
Area code406
FIPS code30-67900
GNIS feature ID2411896
Websitecityofsidneymt.com

Sidney is a city in and the county seat of Richland County, Montana, United States, less than 10 mi (16 km) west of the North Dakota border. The population was 6,346 at the 2020 census. The city lies along the Yellowstone River. Sidney is approximately midway between Glendive, Montana and Williston, North Dakota.