Seminole is a city in Seminole County, Oklahoma, United States. The population was 7,488 at the 2010 census. Seminole experienced a la…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.
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