Parkersburg, IA has a population of 2,019 and is the 10,971st largest city in the United States. The population density is 1,427 per sq mi which is 2511% higher than the Iowa average and 1475% higher than the national average. The median age in Parkersburg is 40 which is approximately 4% higher than the Iowa average of 38. In Parkersburg, 73% of the population over 15 years of age are married, 99% speak English and 0% speak Spanish. 85% of Parkersburg residents were born in Iowa, 14% were born out of state, 0% were born outside of the United States and 1% were foreign born.