Lonoke is a city located in the U.S. state of Arkansas. It is the second most populous city in Lonoke County included in the Little Rock–North Little Rock–Conway Metropolitan Statistical Area. It has a total area of 4.89 square miles at 34°47′3″N 91°54′3″W. The elevation is 240 feet above sea level. As of the 2010 census data, it had a total population of 4,245. The population density was 883.26/sq mi. Estimated per capita income in 2015 was $19,467. It is using Zip code 72086.