La Harpe is a city located in Kansas. With a 2020 population of 516, it is the 278th largest city in Kansas and the 13166th largest city in the United States. La Harpe is currently declining at a rate of -1.15% annually and its population has decreased by -10.73% since the most recent census, which recorded a population of 578 in 2010. La Harpe reached it's highest population of 574 in 2011. Spanning over 1 miles, La Harpe has a population density of 643 people per square mile.
The average household income in La Harpe is $42,677 with a poverty rate of 13.07%. The median rental costs in recent years comes to $719 per month, and the median house value is $51,200. The median age in La Harpe is 48.2 years, 47.8 years for males, and 48.2 years for females. For every 100 females there are 87.4 males.