Kingsley is a city in Plymouth County, Iowa, United States, which is located within Garfield Township. The population was 1,396 at the time of the 2020 census. The city was originally known as the village Quorn, which was founded by two brothers, Frederick and William B. Close. Quorn was named after the Quorn Hunt in England. The village was later relocated to a different part of Iowa and named Kingsley due to a railroad not running through the original area.