Collinsville is a city located in Hartford County Connecticut. Collinsville has a 2020 population of 3,328. Collinsville is currently declining at a rate of 0.00% annually and its population has decreased by -11.16% since the most recent census, which recorded a population of 3,746 in 2010. Collinsville reached it's highest population of 3,851 in 2014.
The average household income in Collinsville is $124,411 with a poverty rate of 4.87%. The median rental costs in recent years comes to $1,134 per month, and the median house value is $313,600. The median age in Collinsville is 47 years, 46.4 years for males, and 47.3 years for females.