Oberlin is a city located in Decatur County Kansas. It is also the county seat of Decatur County. With a 2020 population of 1,660, it is the 136th largest city in Kansas and the 8330th largest city in the United States . Oberlin is currently declining at a rate of -1.19% annually and its population has decreased by -7.16% since the most recent census, which recorded a population of 1,788 in 2010. Oberlin reached it's highest population of 1,782 in 2010. Spanning over 2 miles, Oberlin has a population density of 869 people per square mile.
The average household income in Oberlin is $48,406 with a poverty rate of 16.27%. The median rental costs in recent years comes to $656 per month, and the median house value is $64,600. The median age in Oberlin is 47.3 years, 42.8 years for males, and 51.1 years for females.