Killingworth Flag

Killingworth

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.

6.3K
Total Population
178
Density (mi²)
15 0.24%
Growth

Killingworth Population

Killingworth Population

Data after 2023 is projected based on recent change

Demographics

The racial composition of Killingworth includes 88.99% White, and smaller percentages for Asian, other race and multiracial populations.

Population by Race

Race
Population
Percentage (of total)
White5,53488.99%
Two or more races5739.21%
Asian590.95%
Other race530.85%

Killingworth Marital Status

OverallMalesFemales0%10%20%30%40%50%60%70%80%90%100%

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

Nearby Cities

Sources

  1. US Census State Population Estimates - Most recent state estimates from the Census Bureau's Population Estimates Program
  2. US Census County Population Estimates - Most recent county estimates from the Census Bureau's Population Estimates Program
  3. American Community Survey (2009 - 2013)
  4. Census QuickFacts
  5. Historical Populations of States and Counties (1790 - 1990)