Lincoln is a city in Washington County, Arkansas, United States. The population was 2,294 at the 2020 census. It is part of the Northwest …Lincoln is a city in Washington County, Arkansas, United States. The population was 2,294 at the 2020 census. It is part of the Northwest Arkansas metro area. The area around Lincoln first saw white settlement in the late 1820s. It was first known as Blackjack after the blackjack oaks used to build the first schoolhouse. Joseph Carter built the first store in the area in 1874, still known as Blackjack. A nearby community on Beaty Mountain known as Mt. Hayes was settled in 1877. Starr Hill Township was also organized in the area during this period. The settlements drifted together and continued to grow until applying for a post office in 1884 within Carter's store under the name Georgetown. The name was rejected; the postal service not wanting to duplicate Georgetown in White County, Arkansas. Carter submitted Lincoln as the new name. He said he chose the name seemingly at random, having "seen it on a box", but others were skeptical that Carter had wanted to name the community for Abraham Lincoln all along, as he was a "Republican from the North". Local acceptance for the name Lincoln was slow during the Reconstruction era following the bitter Civil War.