Osawatomie is a city located in Kansas. With a 2020 population of 4,262, it is the 70th largest city in Kansas and the 5221st largest city in the United States. Osawatomie is currently declining at a rate of -0.05% annually and its population has decreased by -4.16% since the most recent census, which recorded a population of 4,447 in 2010. Osawatomie reached it's highest population of 4,645 in 2000. Spanning over 5 miles, Osawatomie has a population density of 810 people per square mile.
The average household income in Osawatomie is $58,902 with a poverty rate of 22.65%. The median rental costs in recent years comes to $716 per month, and the median house value is $84,600. The median age in Osawatomie is 34.2 years, 31.1 years for males, and 38.5 years for females. For every 100 females there are 96.9 males.