Purcell is located in the outer south suburban area of Oklahoma City. It is often called "Quarterhorse Capital of the World" and it is the county seat of McClain County (pop.37,500), Oklahoma, United States; it also extends a short distance into Cleveland County. The population was 5,884 at the 2010 census with 10,880 residents in the zip code (Bestplaces.net). Purcell is located along the I-35 Corridor in the central part of the state, on a bluff overlooking the Canadian River valley within the Interior Plains region. Purcell is the hub for a micropolitan retail trade area of 34,600 (Bestplaces.net) at the southern edge of the seven-county central Oklahoma/Oklahoma City Metropolitan Area with close economic ties to its neighbor to the north Norman and the University of Oklahoma. The official motto and registered trademark for Purcell is "Heart of Oklahoma"
Purcell is located at 35°1′3″N 97°22′10″W / 35.0175°N 97.36944°W / 35.0175; -97.36944 (35.017465, -97.369537).
According to the United States Census Bureau, the city has a total area of 10.4 square miles (26.9 km²), of which, 9.9 square miles (25.8 km²) of it is land and 0.4 square miles (1.1 km²) of it (4.24%) is water.