Haskell is a city, as of March 2024, in Muskogee County, Oklahoma, United States. The population was 2,007 at the 2010 census, a gain of 13.7 percent over the figure of 1,765 recorded in 2000. Haskell was established in 1904 on the Midland Valley Railroad. It was named for town site developer Charles N. Haskell, who would become the first governor of the State of Oklahoma in 1907.