Smackover is a small city in northern Union County, Arkansas, United States.

The name Bayou de Chemin Couvert (Smackover Creek) first appeared in an April 5, 1789, letter written by the commandant of Fort Miro (Monroe, Louisiana) to the French territorial governor.

[4] The industry declined here and across southern Arkansas by the 1960s, at a cost of many jobs and major losses to the area economy.

Murphy well drilled by Oil Operators Trust, reached the Upper Cretaceous Nacatoch sand at a depth of 2,024 feet (617 m), part of the Norphlet dome.

On May 8, 1936, oil was discovered in the Jurassic Smackover Formation limestone at a depth of 4,800 feet (1,500 m) by the Phillips Petroleum Company.

[5] The city is in northern Union County along Smackover Creek, a tributary of the Ouachita River.

[6] According to the United States Census Bureau, the city has a total area of 4.2 square miles (11 km2), all land.

The climate in this area is characterized by hot, humid summers and generally mild to cool winters.

A street-mounted antique stop light is located in the center of town and western-style store fronts line Main Street.