Caddo Valley is a town located in the U.S. state of Arkansas. It is within Clark County on the north side of the Caddo River approximately 2 miles west of its mouth on the Ouachita River. It has a total area of 2.9 square miles at 34°11′58″N 93°4′37″W. The elevation is 210 feet above sea level. As of the 2010 census data, it had a total population of 635. The population density was 206.28/sq mi. Estimated per capita income in 2015 was $21,775. It is using Zip code 71923.