The United States Census Bureau estimates that the population of Connecticut was 3,565,287 on July 1, 2019, a 0.25% decrease since the 2010 United States Census.

As of 2019, Connecticut had an estimated population of 3,565,287, which is a decrease of 7,378 (0.25%) from the prior year and a decrease of 8,810 (0.25%) since 2010.
This includes a natural increase since the last census of 67,427 (222,222 births minus 154,795 deaths) and an increase due to net migration of 41,718 people into the state.
Immigration from outside the United States resulted in a net increase of 75,991 people, and migration within the country produced a net loss of 34,273.
Based on the 2005 estimates, Connecticut moved from 29th most populous state to 30th.
2018 estimates put Connecticut's population at 3,572,665.

6.6% of its population was reported as being under 5 years old, 24.7% under 18 years old, and 13.8% were 65 years of age or older.
Females made up approximately 51.6% of the population, with 48.4% male.

In 1790, 97% of the population in Connecticut was classified as "rural".
The first census in which less than half the population was classified as rural was 1890.
In the 2000 census, only 12.3% was considered rural.
Most of western and southern Connecticut (particularly the Gold Coast) is strongly associated with New York City; this area is the most affluent and populous region of the state and has high property costs and high incomes.
The center of population of Connecticut is located in the town of Cheshire.
The United States Census Bureau estimates that the population of Connecticut was 3,565,287 on July 1, 2019, a 0.25% decrease since the 2010 United States Census.
As of 2019, Connecticut had an estimated population of 3,565,287, which is a decrease of 7,378 (0.25%) from the prior year and a decrease of 8,810 (0.25%) since 2010. This includes a natural increase since the last census of 67,427 (222,222 births minus 154,795 deaths) and an increase due to net migration of 41,718 people into the state. Immigration from outside the United States resulted in a net increase of 75,991 people, and migration within the country produced a net loss of 34,273. Based on the 2005 estimates, Connecticut moved from 29th most populous state to 30th. 2018 estimates put Connecticut's population at 3,572,665.
6.6% of its population was reported as being under 5 years old, 24.7% under 18 years old, and 13.8% were 65 years of age or older. Females made up approximately 51.6% of the population, with 48.4% male.
In 1790, 97% of the population in Connecticut was classified as "rural". The first census in which less than half the population was classified as rural was 1890. In the 2000 census, only 12.3% was considered rural. Most of western and southern Connecticut (particularly the Gold Coast) is strongly associated with New York City; this area is the most affluent and populous region of the state and has high property costs and high incomes. The center of population of Connecticut is located in the town of Cheshire.
Connecticut