Killingly Flag

Killingly

County Seat:
No
Area (mi²):
48.347
State:
Connecticut

Killingly is located in Northeastern Connecticut Planning Region, Connecticut. Killingly has a 2026 population of 18,365. Killingly is currently growing at a rate of 0.75% annually and its population has increased by 3.66% since the most recent census, which recorded a population of 17,716 in 2020.

The median household income in Killingly is $84,350 with a poverty rate of 11.44%. The median age in Killingly is 39.5 years: 38.8 years for males, and 40.3 years for females. For every 100 females there are 93.5 males.

18.4K
Total Population
380
Density (mi²)
136 0.75%
Growth

Killingly Population

Killingly Population

Data after 2023 is projected based on recent change

Year ↓
Population
Growth
Annual Change
202618,3651360.75%
202518,2291360.75%
202418,0931360.76%
202317,9571310.73%
202217,826820.46%
202117,744280.16%
202017,716-28-0.16%
201917,34670.04%
201817,3391350.78%
201717,204890.52%
201617,115-34-0.2%
201517,149-42-0.24%
201417,191-76-0.44%
201317,267-43-0.25%
201217,310-60-0.35%
201117,37000%
201017,38370.04%

Median Age

Overall: 39.5 years
Female: 40.3 years
Male: 38.8 years

Killingly Adults

There are 14,338 adults, (3,525 of whom are seniors) in Killingly.

Sex Ratio

Female: 9,233 (51.7%)
Male: 8,634 (48.3%)

Demographics

The racial composition of Killingly includes 86.29% White, and smaller percentages for Black or African American, other race, Asian, Native American, Native Hawaiian or Pacific Islander and multiracial populations.

Population by Race

Race
Population ↓
Percentage (of total)
White15,41786.29%
Two or more races1,3087.32%
Black or African American4602.57%
Other race4562.55%
Asian1460.82%
Native American670.37%
Native Hawaiian or Pacific Islander130.07%
Race
Population ↓
Percentage (of total)
Two or more races5022.81%
Other race2871.61%
White1150.64%
Native American670.37%
Race
Population ↓
Percentage (of total)
White15,30285.64%
Two or more races8064.51%
Black or African American4602.57%
Other race1690.95%
Asian1460.82%
Native Hawaiian or Pacific Islander130.07%

Killingly Marital Status

Economics and Income Statistics

Killingly 's average per capita income is $57,859. Household income levels show a median of $84,350. The poverty rate stands at 11.44%.

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$109,050-
Families$99,462$109,739
Households$84,350$96,103
Non Families$55,500$64,294

$57,859

Average Income

$84,350

Median Household Income

11.44%

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)