Moundville, AL has a population of 2,580 and is the 9,653rd largest city in the United States. The population density is 563 per sq mi which is 512% higher than the Alabama average and 521% higher than the national average. The median age in Moundville is 33 which is approximately 14% lower than the Alabama average of 39. In Moundville, 61% of the population over 15 years of age are married, 98% speak English and 1% speak Spanish. 82% of Moundville residents were born in Alabama, 17% were born out of state, 0% were born outside of the United States and 2% were foreign born.