Willimantic is a city located in Windham County Connecticut. Willimantic has a 2020 population of 17,358. It is also the county seat of Windham County. Willimantic is currently declining at a rate of 0.00% annually and its population has decreased by -2.14% since the most recent census, which recorded a population of 17,737 in 2010. Willimantic reached it's highest population of 17,845 in 2014.
The average household income in Willimantic is $49,942 with a poverty rate of 30.31%. The median rental costs in recent years comes to $877 per month, and the median house value is $148,900. The median age in Willimantic is 28.5 years, 27.5 years for males, and 29.2 years for females.