Hampton, IA has a population of 4,326 and is the 7,081st largest city in the United States. The population density is 977 per sq mi which is 1688% higher than the Iowa average and 978% higher than the national average. The median age in Hampton is 37 which is approximately 3% lower than the Iowa average of 38. In Hampton, 61% of the population over 15 years of age are married, 80% speak English and 18% speak Spanish. 75% of Hampton residents were born in Iowa, 20% were born out of state, 1% were born outside of the United States and 5% were foreign born.