[4] Fairview, which had been settled following the Land Run of 1893, was designated the county seat, and voters reaffirmed the choice on December 22, 1908.

[5] Named for John Charles Major, a representative of the state's 1906 Constitutional Convention, the area was originally settled by large numbers of Kansas Mennonites.

[4] One county town, Meno, received its name from an early leader of the Mennonite movement, Menno Simons.

[7] Eagle Chief Creek, which empties into the Cimarron River near Cleo Springs, was known to the Cheyenne people as Maheonekamax.

[8] A large gypsum formation extends across much of western Oklahoma, and the Ames Structure, which is buried under 3,000 meters of sand and soil, is possibly the result of a meteorite impact.

Most of the remaining residents were listed as Hispanic or Latino (4.02%), who spoke Spanish (4.1%), Native American (0.9%), or mixed (1.44%).

It is part of Oklahoma's 3rd congressional district, which has a Cook Partisan Voting Index of R+29 and is represented by Frank Lucas.

The county's economy has historically been based on agriculture, specifically wheat farming, poultry raising, and cattle ranching.