Stonington

County:: Southeastern CT Planning Region
County Seat:: No
Area (mi²):: 38.639
State:: Connecticut

Stonington is located in Southeastern CT Planning Region, Connecticut. Stonington has a 2025 population of 18,429. Stonington is currently declining at a rate of -0.01% annually but its population has increased by 0.61% since the most recent census, which recorded a population of 18,318 in 2020.

The average household income in Stonington is $148,756 with a poverty rate of 5.99%. The median age in Stonington is 51.5 years: 48.1 years for males, and 54 years for females.

Demographics

The racial composition of Stonington includes 86.46% White, and smaller percentages for Black or African American, Asian, other race, Native American, Native Hawaiian or Pacific Islander and multiracial populations.

Population by Race

White

Two or more races

Black or African American

Asian

Other race

Native American

Native Hawaiian or Pacific Islander

Race	Population	Percentage (of total)
White	15,892	86.46%
Two or more races	1,465	7.97%
Black or African American	413	2.25%
Asian	337	1.83%
Other race	197	1.07%
Native American	77	0.42%
Native Hawaiian or Pacific Islander	0	0%

Stonington Marital Status

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

Stonington's average per capita income is $65,032. Household income levels show a median of $108,922. The poverty rate stands at 5.99%.

Families: A family includes the owner or renter of the home along with everyone related to them - whether through birth, marriage, or adoption. This includes relatives like spouses, children, parents, siblings, grandparents, and any other family members.

Households: A household includes all the people who occupy a housing unit (such as a house or apartment) as their usual place of residence.

Non Families: A nonfamily household is either someone living alone or when the owner/renter lives with people they aren't related to, like roommates.

Name	Median	Mean
Married Families	$155,895	-
Families	$138,352	$180,058
Households	$108,922	$148,756
Non Families	$56,036	$90,313

$65,032

Average Income

$108,922

Median Household Income

5.99%

Poverty Rate