Council Bluffs, IA has a population of 62,326 and is the 609th largest city in the United States. The population density is 1,454 per sq mi which is 2562% higher than the Iowa average and 1505% higher than the national average. The median age in Council Bluffs is 37 which is approximately 3% lower than the Iowa average of 38. In Council Bluffs, 51% of the population over 15 years of age are married, 92% speak English and 7% speak Spanish. 51% of Council Bluffs residents were born in Iowa, 43% were born out of state, 1% were born outside of the United States and 5% were foreign born.