Mena is a city in Polk County, Arkansas, United States. It is also the county seat of Polk County. It was founded by Arthur Edward Stilwell during the building of the Kansas City, Pittsburg and Gulf Railroad. It was Stilwell who decided Mena would be the name of this new town along the route to Port Arthur, Texas. He named her so in honor of his beloved friend and financier Jan DeGeoijen's wife, Folmina Margaretha Janssen DeGeoijen, whom Mr. DeGeoijen affectionately called Mena. Mena was settled in 1896. According to the United States Census Bureau, the city has a total area of 6.8 square miles 18 square kilometer, of which 6.7 square miles 17 square kilometer is land 0.04 square miles 0.10 square kilometer of it (0.44%) is water.