Garner is a city in and the county seat of Hancock County, Iowa, United States. The population was 3,065 in the 2020 census, an increase from 2,922 in 2000.

Hancock County is a county in the U.S. state of Iowa. As of the 2020 census, the population was 10,795. The county seat is Garner. The county was founded on January 15, 1851, and named in honor of John Hancock, a leader of the Continental Congress during the American Revolution.