For the county in west Texas, see Hockley County, Texas. Hockley, Texas is an unincorporated community located in Harris County, Texas on Texas State Highway 6 and U.S. Highway 290, approximately five miles southeast of the city hall of Waller, and thirty-six miles northwest of Downtown Houston.he community serves as the main hub for railway traffic serving Houston, Austin, and many parts of central Texas. The Southern Pacific rail line is one of the community's major employers. The community is surrounded by grain farms and cattle ranches.