There are 4 US Post Offices in Lincoln County serving a total of 13,640 residents equating to 3,410 residents per post office. It's estimated that approximately 21,771 packages are handled across the 4 county post offices annually. Lincoln County is a county located in the U.S. state of Arkansas. As of the 2010 census, the population was 14,134. The county seat is Star City. Lincoln County is Arkansas's 65th county, formed on March 28, 1871, and named for Abraham Lincoln, the 16th President of the United States. It is an alcohol prohibition or dry county. Lincoln County is included in the Pine Bluff, AR Metropolitan Statistical Area, which is also included in the Little Rock-North Little Rock, AR Combined Statistical Area."