Johnson County
US county in Iowa
Johnson County is located in the U.S. state of Iowa. As of the 2020 census, the population was 152,854, making it the fourth-most populous county in Iowa. The county seat is Iowa City, home of the University of Iowa. Wikipedia
Cities: Iowa City, Coralville, North Liberty, and more
County seat: Iowa City
Population: 156,420 (2022)
Congressional district: 1st
Named for: Richard Mentor Johnson (1837–2020); Lulu Johnson (since 2020)