Blakesburg, IA has a population of 302 and is the 22,472nd largest city in the United States. The population density is 1,124 per sq mi which is 1957% higher than the Iowa average and 1141% higher than the national average. The median age in Blakesburg is 53 which is approximately 39% higher than the Iowa average of 38. In Blakesburg, 59% of the population over 15 years of age are married, 99% speak English and 0% speak Spanish. 88% of Blakesburg residents were born in Iowa, 12% were born out of state, 0% were born outside of the United States and 0% were foreign born.