Kerrville is a city in Kerr County, Texas, United States. It is the county seat of Kerr County. The population was 20,425 at the 2000 census. In 2009, the population was 22,826. Kerrville is named after James Kerr, a major in the Texas Revolution, and friend of settler-founder Joshua Brown, who settled in the area to start a shingle-making camp.