Marion is a city located in Indiana. With a 2020 population of 27,689, it is the 36th largest city in Indiana and the 1376th largest city in the United States. Marion is currently declining at a rate of -0.64% annually and its population has decreased by -7.54% since the most recent census, which recorded a population of 29,948 in 2010. Marion reached it's highest population of 39,607 in 1970. Spanning over 16 miles, Marion has a population density of 1,775 people per square mile.
The average household income in Marion is $44,078 with a poverty rate of 27.09%. The median rental costs in recent years comes to $661 per month, and the median house value is $65,900. The median age in Marion is 35.5 years, 36 years for males, and 34.7 years for females. For every 100 females there are 84.0 males.