Darien is a city located in Fairfield County Connecticut. Darien has a 2020 population of 21,742. Darien is currently declining at a rate of 0.00% annually and its population has increased by 4.87% since the most recent census, which recorded a population of 20,732 in 2010. Darien reached it's highest population of 21,759 in 2018.
The average household income in Darien is $365,528 with a poverty rate of 4.02%. The median rental costs in recent years comes to $2,469 per month, and the median house value is $1.47 Mn. The median age in Darien is 40.1 years, 38.6 years for males, and 41.3 years for females.