Lincoln is a city located in the U.S. state of Arkansas. It is within Washington County included in the Northwest Arkansas metro area. It has a total area of 2.87 square miles at 35°56′54″N 94°25′26″W. The elevation is 1,473 feet above sea level. As of the 2010 census data, it had a total population of 2,249. The population density was 852.37/sq mi. Estimated per capita income in 2015 was $15,033. It is using Zip code 72744.