Buffalo is a city in Johnson County, Wyoming, United States. The city is located almost equidistant between Yellowstone Park and Mount Rushmore. The population was 4,585 at the 2010 census. It is the county seat of Johnson County. The city has experienced an economic boom due to methane production from the coal bed methane extraction method used in the Powder River Basin and surrounding areas. However, with the decline of methane production, Buffalo's population has stabilized since the 2010 Census. Even though energy is a vital part of its economy, agriculture, tourism, and recreations are three other major components. Buffalo is at the foot of the Bighorn Mountains.
Newcastle is a city in and the county seat of Weston County, Wyoming, United States. The population was 3,532 at the 2010 census.
Sheridan is a city in the U.S. state of Wyoming and the county seat of Sheridan County. The city is located halfway between Yellowstone Park and Mount Rushmore by U.S. Route 14 and 16. It is the principal city of the Sheridan, Wyoming, Micropolitan Statistical Area which encompasses all of Sheridan County. The 2010 census put the city's population at 17,444 and the Sheridan, Wyoming, Micropolitan Statistical Area at 29,116, making it the 421st-most populous micropolitan area in the United States.