Harper is a city located in Harper County Kansas. With a 2020 population of 1,283, it is the 159th largest city in Kansas and the 9299th largest city in the United States . Harper is currently declining at a rate of -1.31% annually and its population has decreased by -12.90% since the most recent census, which recorded a population of 1,473 in 2010. Harper reached it's highest population of 1,467 in 2010. Spanning over 2 miles, Harper has a population density of 792 people per square mile.
The average household income in Harper is $53,190 with a poverty rate of 13.05%. The median rental costs in recent years comes to $667 per month, and the median house value is $60,500. The median age in Harper is 39.9 years, 35.8 years for males, and 45.5 years for females.