Columbus Junction is a city located in Louisa County Iowa. With a 2020 population of 1,793, it is the 179th largest city in Iowa and the 8033rd largest city in the United States . Columbus Junction is currently declining at a rate of -1.21% annually and its population has decreased by -5.58% since the most recent census, which recorded a population of 1,899 in 2010. Columbus Junction reached it's highest population of in . Spanning over 2 miles, Columbus Junction has a population density of 819 people per square mile.
The average household income in Columbus Junction is $51,892 with a poverty rate of 15.97%. The median rental costs in recent years comes to $608 per month, and the median house value is $94,600. The median age in Columbus Junction is 35.1 years, 31.2 years for males, and 39.4 years for females.