Louisville is a city located in Colorado. With a 2020 population of 20,148, it is the 32nd largest city in Colorado and the 1838th largest city in the United States. Louisville is currently declining at a rate of -1.63% annually but its population has increased by 9.64% since the most recent census, which recorded a population of 18,376 in 2010. Louisville reached it's highest population of 21,185 in 2017. Spanning over 8 miles, Louisville has a population density of 2,526 people per square mile.
The average household income in Louisville is $131,474 with a poverty rate of 5.86%. The median rental costs in recent years comes to $1,607 per month, and the median house value is $587,000. The median age in Louisville is 41.6 years, 41.7 years for males, and 41.6 years for females. For every 100 females there are 96.5 males.