Oskaloosa is a city located in Kansas. With a 2020 population of 1,059, it is the 184th largest city in Kansas and the 10069th largest city in the United States. Oskaloosa is currently declining at a rate of 0.00% annually and its population has decreased by -4.85% since the most recent census, which recorded a population of 1,113 in 2010. Oskaloosa reached it's highest population of 1,107 in 2010. Spanning over 1 miles, Oskaloosa has a population density of 1,066 people per square mile.
The average household income in Oskaloosa is $73,607 with a poverty rate of 5.95%. The median rental costs in recent years comes to $721 per month, and the median house value is $94,500. The median age in Oskaloosa is 37.4 years, 36.5 years for males, and 39.7 years for females. For every 100 females there are 115.3 males.