Killingly is located in Northeastern Connecticut Planning Region Connecticut. Killingly has a 2024 population of 18,061. Killingly is currently growing at a rate of 0.65% annually and its population has increased by 1.98% since the most recent census, which recorded a population of 17,710 in 2020.
The average household income in Killingly is $89,490 with a poverty rate of 13.87%. The median age in Killingly is 38.9 years: 37.3 years for males, and 40.8 years for females.
According to the most recent ACS, the racial composition of Killingly was:
White
Two or more races
Other race
Black or African American
Asian
Native American
Native Hawaiian or Pacific Islander
Household Type | Count | Average Size | Owner | Renter |
|---|---|---|---|---|
| All | 7,137 | 2.44 | 66.3 | 33.7 |
| Married | 2,900 | 3.05 | 76.3 | 23.7 |
| Non Family | 2,531 | 1.28 | 63.7 | 36.3 |
| Female | 1,196 | 3.27 | 42.2 | 57.8 |
| Male | 510 | 2.71 | 79.4 | 20.6 |
2.88
Average Family Size
2.44
Average Household Size
66.3%
Rate of Home Ownership
Married
Male
Female
NonFamily
owner
renter
Male
Female
Less Than 9th Grade
9th to 12th Grade
High School Graduate
Some College
Associates Degree
Bachelors Degree
Graduate Degree
High School Graduation Rate
Bachelors Rate
The highest rate of high school graduation is among black people with a rate of 100%.
The highest rate of bachelors degrees is among white people with a rate of 25.06%.
All
Male
Female
$50,476
Average Earnings
$52,088
Average Male
$49,311
Average Female
Only English
Spanish
Other Indo-European Languages
Asian and Pacific Island Languages
Other Languages
91.88% of Killingly residents speak only English, while 8.12% speak other languages. The non-English language spoken by the largest group is Spanish, which is spoken by 4.2% of the population.
rate
13.87%
Overall Poverty Rate
12.94%
Male Poverty Rate
14.76%
Female Poverty Rate
The race most likely to be in poverty in Killingly is Asian, with 43.95% below the poverty level.
The race least likely to be in poverty in Killingly is Other, with 1.05% below the poverty level.
The poverty rate among those that worked full-time for the past 12 months was 1.3%. Among those working part-time, it was 10.14%, and for those that did not work, the poverty rate was 26.51%.
Married
Widowed
Divorced
Separated
NeverMarried
43.3%
Overall Marriage Rate
45.3%
Male Marriage Rate
41.3%
Female Marriage Rate
male
female
The age group where males are most likely to be married is Over 65, while the female age group most likely to be married is 45-54.
Married
Widowed
Divorced
Separated
NeverMarried
Less Than 9th Grade
High School Graduate
Some College
Bachelors or Greater
2.92%
Veteran Poverty Rate
26.49%
Veteran Disability Rate
LaborForceParticipation
65.8%
Labor Force Participation
57.1%
Employment Rate
13.2%
Unemployment Rate
LaborForceParticipation
LaborForceParticipation
Europe
Asia
Africa
Oceania
Latin America
North America
Non citizens include legal permanent residents (green card holders), international students, temporary workers, humanitarian migrants, and illegal immigrants.
Europe
Asia
Africa
Oceania
Latin America
North America
53.07%
Born in Killingly
95.68%
Native Born
4.32%
Foreign Born
1.92%
Non Citizen
2.4%
Naturalized
95.68% of Killingly residents were born in the United States, with 53.07% having been born in Connecticut. 1.92% of residents are not US citizens. Of those not born in the United States, the largest percentage are from Latin America.
Year | Population | Growth | Growth Rate |
|---|---|---|---|
| 2029 | 18,641 | 116 | 0.63% |
| 2028 | 18,525 | 116 | 0.63% |
| 2027 | 18,409 | 116 | 0.63% |
| 2026 | 18,293 | 116 | 0.64% |
| 2025 | 18,177 | 116 | 0.64% |
| 2024 | 18,061 | 116 | 0.65% |
| 2023 | 17,945 | 116 | 0.65% |
| 2022 | 17,829 | 89 | 0.5% |
| 2021 | 17,740 | 30 | 0.17% |
| 2020 | 17,710 | 364 | 2.1% |
| 2019 | 17,346 | 7 | 0.04% |
| 2018 | 17,339 | 135 | 0.78% |
| 2017 | 17,204 | 89 | 0.52% |
| 2016 | 17,115 | -34 | -0.2% |
| 2015 | 17,149 | -42 | -0.24% |
| 2014 | 17,191 | -76 | -0.44% |
| 2013 | 17,267 | -43 | -0.25% |
| 2012 | 17,310 | -60 | -0.35% |
| 2011 | 17,370 | -13 | -0.07% |
| 2010 | 17,383 | 0 | 0% |