Sharon Springs is a city in and the county seat of Wallace County, Kansas, United States. As of the 2020 census, the population of the city was …Sharon Springs is a city in and the county seat of Wallace County, Kansas, United States. As of the 2020 census, the population of the city was 751. Sharon Springs was originally called Eagle Tail station when it was founded in 1868. It was renamed Sharon Springs in 1886, after Sharon Springs, New York. Sharon Springs was incorporated as a city in 1890.