Purcell an outer suburb of Oklahoma City, is often called "Quarterhorse Capital of the World" and is a city in and the county seat of McClain County (pop.37,500), Oklahoma, United States; it also extends a small distance into Cleveland County. The population was 5,571 at the 2000 census and 10,880 residents in the zipcode (Bestplaces. net). 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 7 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"