Killingworth

County:: Lower CT River Valley Planning Region
County Seat:: No
Area (mi²):: 35.331
State:: Connecticut

Killingworth is located in Lower CT River Valley Planning Region, Connecticut. Killingworth has a 2025 population of 6,284. Killingworth is currently growing at a rate of 0.24% annually and its population has increased by 2.01% since the most recent census, which recorded a population of 6,160 in 2020.

The average household income in Killingworth is $196,107 with a poverty rate of 3.68%. The median age in Killingworth is 51.8 years: 51.9 years for males, and 51.8 years for females.

Demographics

The racial composition of Killingworth includes 88.99% White, and smaller percentages for Asian, other race, Black or African American, Native American, Native Hawaiian or Pacific Islander and multiracial populations.

Population by Race

White

Two or more races

Asian

Other race

Black or African American

Native American

Native Hawaiian or Pacific Islander

Race	Population	Percentage (of total)
White	5,534	88.99%
Two or more races	573	9.21%
Asian	59	0.95%
Other race	53	0.85%
Black or African American	0	0%
Native American	0	0%
Native Hawaiian or Pacific Islander	0	0%

Killingworth Marital Status

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

Killingworth's average per capita income is $82,635. Household income levels show a median of $132,739. The poverty rate stands at 3.68%.

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	$148,861	-
Families	$147,972	$237,696
Households	$132,739	$196,107
Non Families	$45,769	$65,746

$82,635

Average Income

$132,739

Median Household Income

3.68%

Poverty Rate