Marion is a city located in Grant County Indiana. It is also the county seat of Grant County. With a 2020 population of 27,676, it is the 37th largest city in Indiana and the 1390th largest city in the United States . Marion is currently declining at a rate of -0.46% annually and its population has decreased by -7.59% 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 1,774 people per square mile.
The average household income in Marion is $45,657 with a poverty rate of 25.70%. The median rental costs in recent years comes to $673 per month, and the median house value is $67,800. The median age in Marion is 35.4 years, 35.8 years for males, and 34.8 years for females.