Oklahoma City, Oklahoma, the capital and largest city of the state, and the seat of Oklahoma County. It is on the North Canadian River near the center of the state. Oklahoma City, a major distributing center for the Southwest, is in the midst of a great oil and natural-gas region.

Oklahoma City is a shipping point for many farm products, including wheat, cotton, and livestock. Industries include meat packing, oil refining, and the manufacture of oil-field machinery and tools, aircraft, building materials, processed foods, and iron and steel. Tinker Air Force Base near the city provides employment for many civilians. The Federal Aviation Administration's Aeronautical Center at Will Rogers World Airport maintains pilot records and trains air-traffic controllers and technicians.

The state capitol (1915) was built without a dome because funds ran out. Most of the buildings downtown are linked by Metro Concourse, a tunnel system lined with shops, restaurants, and offices. Attractions in the downtown area include a botanical garden, a state history museum, and a concert hall. North of downtown is Kirkpatrick Center, a complex of buildings that includes a planetarium and a science museum. The city zoo, which has an aquarium, is adjacent to Kirkpatrick Center. Nearby is the National Cowboy Hall of Fame and Western Heritage Center. Each September the city is home to the Oklahoma state fair.

The chief institution of higher learning is Oklahoma City University. The University of Oklahoma medical school is here; the rest of the campus is in nearby Norman. Oklahoma City is home to Ballet Oklahoma and the Oklahoma City Philharmonic Orchestra.