Hamilton County is a county in the U.S. state Nebraska. As of the 2020 United States Census, the population was 9,429. Its county seat is Aurora. The county was named for Alexander Hamilton, the first Secretary of the Treasury in the new United States government.

Grand Island is a city in and the county seat of Hall County, Nebraska, United States. The population was 53,131 at the 2020 census, making it the 4th most populous city in Nebraska.