Clarinda, IA has a population of 5,431 and is the 6,111th largest city in the United States. The population density is 1,047 per sq mi which is 1737% higher than the Iowa average and 1056% higher than the national average. The median age in Clarinda is 41 which is approximately 9% higher than the Iowa average of 38. In Clarinda, 56% of the population over 15 years of age are married, 96% speak English and 2% speak Spanish. 63% of Clarinda residents were born in Iowa, 34% were born out of state, 0% were born outside of the United States and 2% were foreign born.