Killingly is a town in Windham County, Connecticut, United States. Killingly is the largest town by population in the Northeastern Connecticut Planning Region. The population was 17,752 at the 2020 census. It consists of the borough of Danielson and the villages of Attawaugan, Ballouville, Dayville, East Killingly, Rogers, and South Killingly.

Official town website ↗

From Wikipedia, licensed CC BY-SA 4.0 · facts via Wikidata (CC0)

How Killingly ranks

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#5Lowest property tax in CT #8Cheapest rent in CT #11Rent easiest to afford in CT All CT rankings →

Town numbers

ZIP codeSign in to add

Area code860

Living in Killingly

Housing in Killingly

$369K▲ 2.6% in a year Typical home value · Zillow

The typical Killingly home is worth about $369,000, up 2.6% in a year, 18% below the Connecticut typical home.

Zillow Home Value Index · Redfin Data CenterHousing market →

Health in Killingly

B⁻

Health Grade B−

Healthier than 54% of U.S. towns on seven CDC estimates.

Compared with Connecticut

1better than CT·10worse

of 32 measures CDC estimates. The other 21 are too close to call.

Conditions 6▼ 6 close Habits 1▼ 3 close Care 1▲ 1▼ 5 close Mind 2▼ 3 close Everyday needs all close

BetterToo close to callWorse

What stands out

8.3%Fewer uninsured adultsCT 10% · better 15%More older adults who have lost all their teethCT 9.8% · worse

Care nearby

Day Kimball HospitalPutnam · 6.3 mi · ER

Generations Family Health Center, Inc. - DanielsonDanielson · 2.2 mi · sliding-scale fees

Primary careShortage · county-wide

DentalNo shortage

Mental healthShortage · Killingly

CDC PLACES 2025 · modeled estimates for adults · ZIP codes 06241, 06239 · CMS · HRSAHealth in Killingly →

Schools in Killingly

All Killingly schools →

C⁻

School Grade C-

The public schools Killingly’s kids attend, from kindergarten through graduation, trail 78% of Connecticut’s districts on state tests and graduation. Among towns with similar incomes, they rank near the bottom.

See how Killingly’s schools compare in CT →

DistrictKillingly School DistrictSchools7

Killingly Memorial School CElementary · Grades 2–4 · 485 students Killingly Central School D-Elementary · Grades PK–2 · 317 students St. James SchoolElementary · Grades PK–8 · 223 students Killingly Intermediate School CMiddle · Grades 5–8 · 692 students Killingly High School C+High · Grades 9–12 · 744 students H. H. Ellis Technical High School C-High · Grades 9–12 · 650 students

School data from the U.S. Department of Education (NCES, EDFacts). The School Grade is our own summary of state test results and graduation rates, graded within CT. Ratings are from neighbors.