Mannington, WV has a population of 1,951 and is the 11,171st largest city in the United States. The population density is 1,785 per sq mi which is 2231% higher than the West Virginia average and 1871% higher than the national average. The median age in Mannington is 41 which is approximately 1% lower than the West Virginia average of 42. In Mannington, 71% of the population over 15 years of age are married, 98% speak English and 1% speak Spanish. 78% of Mannington residents were born in West Virginia, 21% were born out of state, 1% were born outside of the United States and 0% were foreign born.