Killingly

County:: Northeastern CT Planning Region
County Seat:: No
Area (mi²):: 48.347
State:: Connecticut

Killingly is located in Northeastern CT Planning Region, Connecticut. Killingly has a 2025 population of 18,177. Killingly is currently growing at a rate of 0.64% annually and its population has increased by 2.64% since the most recent census, which recorded a population of 17,710 in 2020.

The average household income in Killingly is $92,976 with a poverty rate of 14.71%.The median age in Killingly is 39.2 years: 38.1 years for males, and 41.3 years for females.

Demographics

The racial composition of Killingly includes 88.36% White, and smaller percentages for other race, Black or African American, Asian, Native American, Native Hawaiian or Pacific Islander and multiracial populations.

Population by Race

Race	Population	Percentage (of total)
White	15,714	88.36%
Two or more races	932	5.24%
Other race	470	2.64%
Black or African American	367	2.06%
Asian	216	1.21%
Native American	63	0.35%
Native Hawaiian or Pacific Islander	23	0.13%

Killingly Marital Status

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

Killingly's average per capita income is $56,800. Household income levels show a median of $81,881. The poverty rate stands at 14.71%.

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	$108,125	-
Families	$97,904	$106,910
Households	$81,881	$92,976
Non Families	$51,333	$62,613

$56,800

Average Income

$81,881

Median Household Income

14.71%

Poverty Rate