Ardmore is the county seat of Carter County, Oklahoma, United States. According to the 2010 census, the city had a population of 24,283, with an estimated population of 24,698 in 2019. The Ardmore micropolitan statistical area had an estimated population of 48,491 in 2013. Ardmore is 90 miles (140 km) from both Oklahoma City and Dallas/Fort Worth, Texas, at the junction of Interstate 35 and U.S. Highway 70, and is generally considered the hub of the 13-county region of South Central Oklahoma, also known by state tourism pamphlets as "Chickasaw Country" and previously "Lake and Trail Country". It is also a part of the Texoma region. Ardmore is situated about 9 miles (14 km) south of the Arbuckle Mountains and is located at the eastern margin of the Healdton Basin, one of the most oil-rich regions of the United States.

Ardmore was named after the affluent Philadelphia suburb and historic PRR Main Line stop of Ardmore, Pennsylvania, which was named after Ardmore in County Waterford, Ireland, by the Pennsylvania Railroad in 1873. The name "Ardmore" is Irish for high grounds or hills.

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