Colfax is a city in Jasper County, Iowa, United States. Colfax is located approximately 24 miles east of Des Moines. The town was founded in 1866, and was named after Schuyler Colfax, vice president under Ulysses S. Grant. The population was 2,255 at the time of the 2020 census. Newton is the county seat; both were named after Revolutionary War soldiers.

Jasper County is a county in the U.S. state of Iowa. As of the 2020 census, the population was 37,813. The county seat is Newton. The county was organized in 1846 and is named after Sergeant William Jasper, a Revolutionary War hero.