Linn County, Iowa

Linn County
Location within the U.S. state of Iowa
Iowa's location within the U.S.
Coordinates: 42°04′43″N 91°35′59″W / 42.078611111111°N 91.599722222222°W / 42.078611111111; -91.599722222222
Country United States
State Iowa
Founded1839
Named afterLewis Linn
SeatCedar Rapids
Largest cityCedar Rapids
Area
  Total
725 sq mi (1,880 km2)
  Land717 sq mi (1,860 km2)
  Water7.6 sq mi (20 km2)  1.1%
Population
 (2020)
  Total
230,299
  Estimate 
(2023)
228,972
  Density320/sq mi (120/km2)
Time zoneUTC−6 (Central)
  Summer (DST)UTC−5 (CDT)
Congressional district2nd
Websitewww.linncountyiowa.gov

Linn County is a county located in the U.S. state of Iowa. As of the 2020 census, the population was 230,299, making it the second-most populous county in Iowa. The county seat is Cedar Rapids. Linn County is named in honor of Senator Lewis F. Linn of Missouri. Linn County is included in the Cedar Rapids, IA Metropolitan Statistical Area.