Chelsea is a town in Rogers County, Oklahoma, United States. As of the 2020 census, Chelsea had a population of 1,991. Chelsea was named after the area in London, England, by Charles Peach, a railroad official who was a native of London. The town was the site of the Chelsea-Alluwe Oil Field, which produced a significant amount of oil from circa 1910 until the early 1920s, before it played out. Will Rogers attended a subscription school on Cherokee Land in Chelsea.