Union County is a county located in the U.S. state of Arkansas. As of 2000, the population was 45,629. The county seat is El Dorado. The county was formed on November 2, 1829 and named in recognition of the citizens' petition for a new county, stating that they were petitioning "in the spirit of Union and Unity".
Smackover is a city in Union County, Arkansas, United States. According to 2006 Census Bureau estimates, the population of the city is 1,929. The name Smackover is an anglicization of the French "Sumac Couvert" which translates to "covered in sumac".
Smackover is home to the Arkansas Museum of Natural Resources. The Museum depicts the history and culture of Smackover and the surrounding area with an indoor reconstruction of downtown Smackover, an Oil Field Park, and numerous exhibits illustrating South Arkansas's oil industry. Smackover hosts an annual four-day Oil Town Festival held in June. More information can be found at http://www.amnr.org/south.htm