Marion is a city located in Iowa. With a 2020 population of 41,213, it is the 13th largest city in Iowa and the 951st largest city in the United States. Marion is currently growing at a rate of 1.52% annually and its population has increased by 18.54% since the most recent census, which recorded a population of 34,768 in 2010. Spanning over 18 miles, Marion has a population density of 2,327 people per square mile.
The average household income in Marion is $84,813 with a poverty rate of 7.22%. The median rental costs in recent years comes to $658 per month, and the median house value is $161,500. The median age in Marion is 38.9 years, 37.7 years for males, and 40 years for females. For every 100 females there are 94.4 males.