Smackover is a little city located in the U.S. state of Arkansas. It is within Union County. It has a total area of 4.25 square miles at 33°21′41″N 92°43′40″W. The elevation is 121 feet above sea level. As of the 2010 census data, it had a total population of 1,865. The population density was 415.02/sq mi. Estimated per capita income in 2016 was $20,253. Recent job growth is positively increased by 3.37 percent. The average travel time is 12 minutes. It has Zip code 71658. It has Zip code 71762.