Chickasaw County is a county located in the U.S. state of Iowa. As of the 2020 census, the population was 12,012. Its county seat is New Hampton. The county was named for the southern Indian Nation whose chief was Bradford.

Bremer County is a county in the northeastern part of the U.S. state of Iowa. As of the 2020 Census, the population was 24,988. Its county seat is Waverly. The county was named for Fredrika Bremer, a Swedish feminist writer.