Buffalo County, Nebraska
Buffalo County is a county located in the U.S. state of Nebraska. As of the 2020 census, the population was 50,084, and was estimated to be 51,172 in 2025, making it the fifth-most populous county in Nebraska. The county seat and the largest city is Kearney.
Buffalo County is part of the Kearney micropolitan area.
In the Nebraska license plate system, Buffalo County was represented by the prefix "9" (as it had the ninth-largest number of vehicles registered in the state when the license plate system was established in 1922).