Madison is a city located in the U.S. state of Arkansas. It is within St. Francis County. It has a total area of 1.77 square miles at 35°0′49″N 90°43′37″W. The elevation is 210 feet above sea level. As of the 2010 census data, it had a total population of 769. The population density was 406.93/sq mi. Estimated per capita income in 2015 was $12,676. It is using Zip codes 72359 and 72394.