Belle Plaine is a city located in Kansas. With a 2020 population of 1,556, it is the 144th largest city in Kansas and the 8577th largest city in the United States. Belle Plaine is currently declining at a rate of -0.38% annually and its population has decreased by -7.44% since the most recent census, which recorded a population of 1,681 in 2010. Belle Plaine reached it's highest population of 1,674 in 2010. Spanning over 1 miles, Belle Plaine has a population density of 1,872 people per square mile.
The average household income in Belle Plaine is $62,963 with a poverty rate of 8.16%. The median rental costs in recent years comes to $712 per month, and the median house value is $74,000. The median age in Belle Plaine is 43.6 years, 47.4 years for males, and 41.8 years for females. For every 100 females there are 102.2 males.