Baldwin City is a city located in Douglas County Kansas. With a 2020 population of 4,752, it is the 64th largest city in Kansas and the 4904th largest city in the United States . Baldwin City is currently growing at a rate of 0.55% annually and its population has increased by 5.25% since the most recent census, which recorded a population of 4,515 in 2010. Baldwin City reached it's highest population of 4,752 in 2021. Spanning over 3 miles, Baldwin City has a population density of 1,779 people per square mile.
The average household income in Baldwin City is $91,212 with a poverty rate of 8.83%. The median rental costs in recent years comes to $870 per month, and the median house value is $171,900. The median age in Baldwin City is 31.9 years, 31.3 years for males, and 33.6 years for females.