Buena Vista County, Iowa

Buena Vista County
Buena Vista County Courthouse
Location within the U.S. state of Iowa
Iowa's location within the U.S.
Coordinates: 42°44′06″N 95°09′01″W / 42.735°N 95.150277777778°W / 42.735; -95.150277777778
Country United States
State Iowa
Founded1851
Named afterBattle of Buena Vista
SeatStorm Lake
Largest cityStorm Lake
Area
  Total
580 sq mi (1,500 km2)
  Land575 sq mi (1,490 km2)
  Water5.3 sq mi (14 km2)  0.9%
Population
 (2020)
  Total
20,823
  Density36/sq mi (14/km2)
Time zoneUTC−6 (Central)
  Summer (DST)UTC−5 (CDT)
Congressional district4th
Websitebuenavistacounty.iowa.gov

Buena Vista County (/ˈbjuːnə ˈvɪstə/; Spanish pronunciation: [ˈbwena ˈβista]) is a county located in the U.S. state of Iowa. As of the 2020 census, the population was 20,823. Its county seat is Storm Lake. The county is named for the final victory of Field General Zachary Taylor in the Mexican–American War.

Buena Vista County comprises the Storm Lake, IA Micropolitan Statistical Area.