Vilonia is a city located in the U.S. state of Arkansas. It is within Faulkner County included in the Little Rock–North Little Rock–Conway Metropolitan Statistical Area. It has a total area of 7.97 square miles at 35°4′38″N 92°12′45″W. The elevation is 308 feet above sea level. As of the 2010 census data, it had a total population of 3,815. The population density was 561.93/sq mi. Estimated per capita income in 2016 was $63,293. It has Zip code 72173.