Hamburg, IA has a population of 1,115 and is the 14,478th largest city in the United States. The population density is 1,015 per sq mi which is 1759% higher than the Iowa average and 1021% higher than the national average. The median age in Hamburg is 43 which is approximately 12% higher than the Iowa average of 38. In Hamburg, 49% of the population over 15 years of age are married, 99% speak English and 1% speak Spanish. 43% of Hamburg residents were born in Iowa, 56% were born out of state, 0% were born outside of the United States and 1% were foreign born.