There are 1 US Post Offices in Glasscock County serving a total of 963 residents equating to 963 residents per post office. It's estimated that approximately 1,537 packages are handled across the 1 county post offices annually. Glasscock County is a county located in the U.S. state of Texas. As of the 2010 census, its population was 1,226. Its county seat is Garden City. The county was created in 1887 and later organized in 1893. It is named for George Washington Glasscock, an early settler of the Austin, Texas area. Glasscock County is included in the Big Spring, TX Micropolitan Statistical Area."