Camanche, IA has a population of 4,368 and is the 7,045th largest city in the United States. The population density is 503 per sq mi which is 821% higher than the Iowa average and 455% higher than the national average. The median age in Camanche is 43 which is approximately 14% higher than the Iowa average of 38. In Camanche, 60% of the population over 15 years of age are married, 96% speak English and 3% speak Spanish. 80% of Camanche residents were born in Iowa, 17% were born out of state, 1% were born outside of the United States and 1% were foreign born.