Asbury, IA has a population of 5,201 and is the 6,282nd largest city in the United States. The population density is 1,647 per sq mi which is 2915% higher than the Iowa average and 1718% higher than the national average. The median age in Asbury is 36 which is approximately 6% lower than the Iowa average of 38. In Asbury, 76% of the population over 15 years of age are married, 95% speak English and 1% speak Spanish. 74% of Asbury residents were born in Iowa, 21% were born out of state, 1% were born outside of the United States and 5% were foreign born.