Derby is a city located in Kansas. With a 2020 population of 24,755, it is the 16th largest city in Kansas and the 1549th largest city in the United States. Derby is currently growing at a rate of 0.07% annually and its population has increased by 11.72% since the most recent census, which recorded a population of 22,158 in 2010. Spanning over 10 miles, Derby has a population density of 2,413 people per square mile.
The average household income in Derby is $87,147 with a poverty rate of 4.86%. The median rental costs in recent years comes to $926 per month, and the median house value is $159,200. The median age in Derby is 35.8 years, 35.7 years for males, and 35.8 years for females. For every 100 females there are 97.0 males.