Dallas Center, IA has a population of 1,851 and is the 11,480th largest city in the United States. The population density is 351 per sq mi which is 543% higher than the Iowa average and 288% higher than the national average. The median age in Dallas Center is 36 which is approximately 7% lower than the Iowa average of 38. In Dallas Center, 70% of the population over 15 years of age are married, 98% speak English and 1% speak Spanish. 83% of Dallas Center residents were born in Iowa, 16% were born out of state, 0% were born outside of the United States and 2% were foreign born.