Morrison, IA has a population of 122 and is the 26,340th largest city in the United States. The population density is 1,279 per sq mi which is 2241% higher than the Iowa average and 1312% higher than the national average. The median age in Morrison is 46 which is approximately 22% higher than the Iowa average of 38. In Morrison, 81% of the population over 15 years of age are married, 99% speak English and 1% speak Spanish. 89% of Morrison residents were born in Iowa, 11% were born out of state, 0% were born outside of the United States and 0% were foreign born.