Mena (/miːnə/ MEE-nə) is a city in Polk County, Arkansas, United States. It is also the county seat of Polk County. The population was 5,637 as of 2000 census.Mena is included in the Ark-La-Tex socio-economic region.Surrounded by the Ouachita National Forest, Mena is a gateway to some of the most visited tourist attractions in Arkansas.