Middlebourne, WV has a population of 866 and is the 16,064th largest city in the United States. The population density is 2,400 per sq mi which is 3035% higher than the West Virginia average and 2549% higher than the national average. The median age in Middlebourne is 44 which is approximately 5% higher than the West Virginia average of 42. In Middlebourne, 56% of the population over 15 years of age are married, 98% speak English and 1% speak Spanish. 72% of Middlebourne residents were born in West Virginia, 26% were born out of state, 0% were born outside of the United States and 2% were foreign born.