Stilwell is an unincorporated community in Johnson County, Kansas, United States, and part of the Kansas City Metropolitan Area.
Stilwell had its start when the railroad was extended to that point. It was platted in 1886 under the name of Mt. Auburn. The first post office in Stilwell was established in June 1888. It was renamed to Stilwell in 1889. Like many towns along the line to the Gulf of Mexico, it is named for Arthur Stilwell, founder of what became the Kansas City Southern Railroad.
Stilwell is mostly agricultural land, largely sod farms, but in recent years has spawned suburban neighborhoods. The Aubry Township Board stated[when?] that by 2010, most of Stilwell would be urban. Stilwell has affordable land and some farms are abandoned; however the large population growth of Overland Park, Kansas increased the demand for new neighborhoods, raising the land value in some areas.
Stilwell is located at Coordinates: .
The climate in this area is characterized by hot, humid summers and generally mild to cool winters. According to the Köppen Climate Classification system, Stilwell has a humid subtropical climate, abbreviated "Cfa" on climate maps.