Post Falls is a city located in Kootenai County Idaho. With a 2020 population of 39,452, it is the 9th largest city in Idaho and the 998th largest city in the United States . Post Falls is currently growing at a rate of 4.23% annually and its population has increased by 43.08% since the most recent census, which recorded a population of 27,574 in 2010. Post Falls reached it's highest population of 39,452 in 2021. Spanning over 15 miles, Post Falls has a population density of 2,608 people per square mile.
The average household income in Post Falls is $63,387 with a poverty rate of 14.74%. The median rental costs in recent years comes to $1,013 per month, and the median house value is $218,100. The median age in Post Falls is 33.9 years, 32.8 years for males, and 34.6 years for females.