Hillsboro is a city located in Marion County Kansas. With a 2020 population of 2,790, it is the 91st largest city in Kansas and the 6470th largest city in the United States . Hillsboro is currently declining at a rate of -0.46% annually and its population has decreased by -6.78% since the most recent census, which recorded a population of 2,993 in 2010. Hillsboro reached it's highest population of 3,000 in 2010. Spanning over 2 miles, Hillsboro has a population density of 1,142 people per square mile.
The average household income in Hillsboro is $62,208 with a poverty rate of 9.84%. The median rental costs in recent years comes to $606 per month, and the median house value is $88,700. The median age in Hillsboro is 37.5 years, 36.2 years for males, and 42.4 years for females.