sentences:  Traveling south from Memorial Road to 89th Street, then go west to County Line Road and then north on County Line Road to I-40.Travel east on I-40 from County Line Road to Santa Fe Avenue.The Black Beaver District geographic territory covers the Oklahoma communities of Lawton, Cache, Medicine Park, and all other communities in Comanche County, and all Caddo County communities except for those communities which are in the northern tip of Caddo County.