There are 5 US Post Offices in Jasper County serving a total of 36,301 residents equating to 7,260 residents per post office. It's estimated that approximately 57,940 packages are handled across the 5 county post offices annually. Jasper County is a county located in the U.S. state of Texas. As of the 2010 census, its population was 35,710. Its county seat is Jasper. The county was created as a municipality in Mexico in 1834, and in 1837 was organized as a county in the Republic of Texas. It is named for William Jasper, an American Revolutionary War hero."