There are 13 US Post Offices in Walker County serving a total of 44,416 residents equating to 3,417 residents per post office. It's estimated that approximately 70,893 packages are handled across the 13 county post offices annually. Walker County is a county in the U.S. state of Alabama. As of the 2010 census, the population was 67,023. Its county seat is Jasper. Its name is in honor of John Williams Walker, a member of the United States Senate. Walker County is included in the Birmingham-Hoover, AL Metropolitan Statistical Area.