Bloomfield, IA has a population of 2,622 and is the 9,551st largest city in the United States. The population density is 1,160 per sq mi which is 2024% higher than the Iowa average and 1181% higher than the national average. The median age in Bloomfield is 37 which is approximately 3% lower than the Iowa average of 38. In Bloomfield, 56% of the population over 15 years of age are married, 98% speak English and 1% speak Spanish. 74% of Bloomfield residents were born in Iowa, 25% were born out of state, 0% were born outside of the United States and 1% were foreign born.