Colchester is a city located in New London County Connecticut. Colchester has a 2020 population of 15,659. Colchester is currently declining at a rate of -0.48% annually and its population has decreased by -2.13% since the most recent census, which recorded a population of 16,000 in 2010. Colchester reached it's highest population of 16,072 in 2012.
The average household income in Colchester is $119,617 with a poverty rate of 7.12%. The median rental costs in recent years comes to $1,263 per month, and the median house value is $255,500. The median age in Colchester is 42.5 years, 40.6 years for males, and 44 years for females.