Tripoli, IA has a population of 1,316 and is the 13,484th largest city in the United States. The population density is 949 per sq mi which is 1637% higher than the Iowa average and 947% higher than the national average. The median age in Tripoli is 43 which is approximately 12% higher than the Iowa average of 38. In Tripoli, 66% of the population over 15 years of age are married, 97% speak English and 2% speak Spanish. 84% of Tripoli residents were born in Iowa, 16% were born out of state, 0% were born outside of the United States and 0% were foreign born.