Hooper is a city in Dodge County, Nebraska, United States. The population was 857 at the 2020 census. Hooper was established in 1…Hooper is a city in Dodge County, Nebraska, United States. The population was 857 at the 2020 census. Hooper was established in 1871, following construction of the Fremont, Elkhorn and Missouri Valley Railroad through the territory. It was named for Samuel Hooper, a US congressman from Massachusetts.