Columbia is a city located in Lancaster County Pennsylvania. With a 2020 population of 10,305, it is the 65th largest city in Pennsylvania and the 3031st largest city in the United States . Columbia is currently declining at a rate of -0.24% annually and its population has decreased by -0.91% since the most recent census, which recorded a population of 10,400 in 2010. Columbia reached it's highest population of in . Spanning over 2 miles, Columbia has a population density of 4,269 people per square mile.
The average household income in Columbia is $55,852 with a poverty rate of 20.43%. The median rental costs in recent years comes to $804 per month, and the median house value is $107,900. The median age in Columbia is 37.6 years, 36.3 years for males, and 39.9 years for females.