Oklaunion, TX

ZIP code 76373 serves Petrolia and surrounding rural areas in Clay County, north-central Texas, near the Oklahoma border. The community is small and primarily residential and agricultural, with local services centered in Petrolia. Notable places include Petrolia High School, Petrolia Cemetery, and the historic Petrolia oil-field area, associated with the early-20th-century oil development that helped shape the town. The landscape is largely open farmland and ranchland.