Columbia is a city located in Boone County Missouri. It is also the county seat of Boone County. With a 2020 population of 124,519, it is the 4th largest city in Missouri (after Kansas City, , and ) and the 228th largest city in the United States . Columbia is currently growing at a rate of 0.53% annually and its population has increased by 14.76% since the most recent census, which recorded a population of 108,500 in 2010. Columbia reached it's highest population of in . Spanning over 66 miles, Columbia has a population density of 1,899 people per square mile.
The average household income in Columbia is $74,727 with a poverty rate of 21.77%. The median rental costs in recent years comes to $887 per month, and the median house value is $191,800. The median age in Columbia is 28.5 years, 28 years for males, and 28.8 years for females.