Ashdown is a city in Little River County, Arkansas, United States. The city is the county seat of Little River County. According to the United States Census Bureau, the city has a total area of 7.2 square miles 19 square kilometer. 7.1 square miles 18.4 square kilometer of it is land and 0.04 square miles 0.10 square kilometer of it (0.56%) is water. Millwood Lake is located seven miles east of the town.