Cedar Vale is a city in Chautauqua County, Kansas, United States. As of the 2020 census, the population of the city was 476. Cedar Vale was …Cedar Vale is a city in Chautauqua County, Kansas, United States. As of the 2020 census, the population of the city was 476. Cedar Vale was founded in 1870. Its name is meant to be descriptive of the town's setting.