Traer, IA has a population of 1,736 and is the 11,868th largest city in the United States. The population density is 1,467 per sq mi which is 2474% higher than the Iowa average and 1520% higher than the national average. The median age in Traer is 47 which is approximately 24% higher than the Iowa average of 38. In Traer, 68% of the population over 15 years of age are married, 97% speak English and 0% speak Spanish. 79% of Traer residents were born in Iowa, 20% were born out of state, 0% were born outside of the United States and 2% were foreign born.