There are 2 US Post Offices in Hartley County serving a total of 1,314 residents equating to 657 residents per post office. It's estimated that approximately 2,097 packages are handled across the 2 county post offices annually. Hartley County is a county located in the U.S. state of Texas. As of the 2010 census, its population was 6,062. The county seat is Channing. The county was created in 1876 and later organized in 1891. It is named for Oliver C. Hartley and his brother, Rufus K. Hartley, two early Texas legislators and lawyers."