Seminole is a city in Seminole County, Oklahoma, United States. The population was 7,488 at the 2010 census. Seminole experienced a large population growth in the 1920s due to an oil boom.
The city was platted in 1906 as a relocation setting for the residents of Tidmore, when the railroad line was placed north of the town. When Oklahoma Territory and Indian Territory merged to become the U.S. state of Oklahoma in 1907, there were 206 residents.
Seminole competed to be the county seat of Seminole County, but lost out to Wewoka.
Upon the discovery of a high-producing oil well in the city in 1926, Seminole transformed from a town of 854 to a boom town of 25,000 to 30,000 residents. In August 1970 Seminole hosted its first All-Night Gospel Singing. During its heyday an estimated twenty-five thousand people attended the annual event. After the boom, the population declined to about 11,000 and remained that way until 1970.
There are multiple structures in the Seminole area listed on the National Register of Historic Places. They include the Home Stake Oil and Gas Company Building, Mekasukey Academy, the Seminole Municipal Building, the Sinclair Loading Rack, Strother Memorial Chapel, and the W.E. Grisso Mansion.
Seminole is located at 35°14′28″N 96°40′6″W (35.241132, -96.668419).
According to the United States Census Bureau, the city has a total area of 14.5 square miles (38 km2), of which, 13.9 square miles (36 km2) of it is land and 0.6 square miles (1.6 km2) of it (3.93%) is water.
As of the census of 2000, there were 6,899 people, 2,760 households, and 1,827 families residing in the city. The population density was 494.7 people per square mile (190.9/km2).