Black Hawk County is a county in the northeastern part of U.S. state of Iowa. As of the 2020 census, the population was 131,144, making it Iowa's fifth-most populous county. The county seat is Waterloo.
Grundy County is a county located in the U.S. state of Iowa. At the 2020 census, the population was 12,329. The county seat is Grundy Center. The county is named for Felix Grundy, former U.S. Attorney General.
Bruce Township is one of twenty townships in Benton County, Iowa, USA. As of the 2000 census, its population was 319. As of 2018, the population is 298.
Barclay Township is one of seventeen rural townships in Black Hawk County, Iowa, USA. As of the 2000 census, its population was 542.
Bennington Township is one of seventeen rural townships in Black Hawk County, Iowa, USA. As of the 2000 census, its population was 500.
Big Creek Township is one of seventeen rural townships in Black Hawk County, Iowa, USA. As of the 2000 census, its population was 2640.
Cedar Township is one of seventeen rural townships in Black Hawk County, Iowa, USA. As of the 2000 census, its population was 1761.
Eagle Township is one of seventeen rural townships in Black Hawk County, Iowa, USA. As of the 2000 census, its population was 511.
East Waterloo Township is one of seventeen rural townships in Black Hawk County, Iowa, United States. As of the 2000 census, its population was 5936.
Fox Township is one of seventeen rural townships in Black Hawk County, Iowa, USA. As of the 2000 census, its population was 520.
Lester Township is one of seventeen rural townships in Black Hawk County, Iowa, USA. As of the 2000 census, its population was 1504.
Lincoln Township is one of seventeen rural townships in Black Hawk County, Iowa, United States. As of the 2000 census, its population was 403.
Mount Vernon Township is one of seventeen rural townships in Black Hawk County, Iowa, USA. As of the 2000 census, its population was 1098.
Orange Township is one of seventeen rural townships in Black Hawk County, Iowa, USA. As of the 2000 census, its population was 385.
Poyner Township is one of seventeen rural townships in Black Hawk County, Iowa, USA. As of the 2000 census, its population was 2581.
Spring Creek Township is one of seventeen rural townships in Black Hawk County, Iowa, USA. As of the 2000 census, its population was 332.
Union Township is one of seventeen rural townships in Black Hawk County, Iowa, USA. As of the 2000 census, its population was 941.
Washington Township is one of seventeen rural townships in Black Hawk County, Iowa, USA. As of the 2000 census, its population was 647.
Capps Creek Township is one of twenty-five townships in Barry County, Missouri, United States. As of the 2000 census, its population was 570.
United States 
Iowa 
