Kinsley is a city in and the county seat of Edwards County, Kansas, United States. As of the 2020 census, the population of the city was 1,456. I…Kinsley is a city in and the county seat of Edwards County, Kansas, United States. As of the 2020 census, the population of the city was 1,456. It is located along Highway 50. The community was originally called Petersburg, and under the latter name laid out in 1873. It was later renamed Peter's City. The majority of the community's first residents were from New England, especially Massachusetts, and were originally drawn by the New England Homestead and Colonization Bureau, and it was called the "New England colony" or "Massachusetts colony." In 1873, the settlement was renamed Kinsley after the Boston capitalist Edward Wilkinson Kinsley, who agreed to build a church if the community was named after him.