Cass County, Iowa

Cass County
Location within the U.S. state of Iowa
Iowa's location within the U.S.
Coordinates: 41°19′46″N 94°55′45″W / 41.329444444444°N 94.929166666667°W / 41.329444444444; -94.929166666667
Country United States
State Iowa
Founded1851
Named afterLewis Cass
SeatAtlantic
Largest cityAtlantic
Area
  Total
565 sq mi (1,460 km2)
  Land564 sq mi (1,460 km2)
  Water0.7 sq mi (2 km2)  0.1%
Population
 (2020)
  Total
13,127
  Density23/sq mi (9.0/km2)
Time zoneUTC−6 (Central)
  Summer (DST)UTC−5 (CDT)
Congressional district3rd
Websitewww.casscountyia.gov

Cass County is a county located in the U.S. state of Iowa. As of the 2020 census, the population was 13,127. Its county seat is Atlantic. It was named to honor Lewis Cass, who was the 1848 Democratic nominee for president.