Marion is a city located in Marion County Kansas. It is also the county seat of Marion County. With a 2020 population of 1,757, it is the 129th largest city in Kansas and the 8102nd largest city in the United States . Marion is currently declining at a rate of -0.51% annually and its population has decreased by -8.82% since the most recent census, which recorded a population of 1,927 in 2010. Marion reached it's highest population of 1,928 in 2010. Spanning over 3 miles, Marion has a population density of 655 people per square mile.
The average household income in Marion is $51,531 with a poverty rate of 5.85%. The median rental costs in recent years comes to $606 per month, and the median house value is $71,400. The median age in Marion is 43.3 years, 41.7 years for males, and 44.8 years for females.