There are 4 US Post Offices in Jasper County serving a total of 23,240 residents equating to 5,810 residents per post office. It's estimated that approximately 37,094 packages are handled across the 4 county post offices annually. Jasper County is the southernmost county in the U.S. state of South Carolina. As of the 2010 census, the population was 24,777. Its county seat is Ridgeland. The county was formed in 1912 from portions of Hampton County and Beaufort County. Jasper County is included in the Hilton Head Island-Bluffton-Beaufort, SC Metropolitan Statistical Area. It is located in the Lowcountry region of the state. For several decades, in contrast to neighboring Beaufort County, Jasper was one of the poorest counties in the state. Recent development from 2000 onwards has given the county new residents, expanded business opportunities, and a wealthier tax base. Since 2010, Jasper County is the second-fastest-growing county by population in South Carolina, behind Horry County."