Highfill is a town located in the U.S. state of Arkansas. It is within Benton County and the Northwest Arkansas Regional Airport lies on the eastern part of town. It has a total area of 18.36 square miles at 36°16′14″N 94°19′30″W. The elevation is 1,352 feet above sea level. As of the 2010 census data, it had a total population of 583. The population density was 35.55/sq mi. Estimated per capita income in 2015 was $37,678.