Parnell, IA has a population of 206 and is the 24,317th largest city in the United States. The population density is 1,192 per sq mi which is 2082% higher than the Iowa average and 1216% higher than the national average. The median age in Parnell is 36 which is approximately 6% lower than the Iowa average of 38. In Parnell, 54% of the population over 15 years of age are married, 100% speak English and 0% speak Spanish. 85% of Parnell residents were born in Iowa, 14% were born out of state, 0% were born outside of the United States and 0% were foreign born.