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.

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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 →

Work & commute in Killingly

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About one in 4 of Killingly’s working residents works in town. The top destinations are Putnam (8%), Plainfield (5%) and Brooklyn (3%). Half commute less than 18 miles.

Putnam

Plainfield

Brooklyn

Norwich

23%Work in townlive and work in Killingly 18 miWhere do people commute?the commute map 8,011Jobs based herebalanced

Census LEHD 2023 · ACSWork & commute in Killingly →

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 →

Natural hazards in Killingly

High

Expected storm and flood damage is higher than in 69% of U.S. communities.

🌊 Inland flooding🌀 Hurricanes

6Does Killingly flood?paid flood claims since 1979 MapKillingly vs. its neighborsnearby towns shaded by rating

FEMA National Risk Index December 2025 · OpenFEMANatural hazards in Killingly →

Climate in Killingly

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Killingly has chilly, snowy winters and pleasant summers, with plenty of rain. A typical July afternoon reaches 82°, a January night drops to 18°, and about 62 inches of snow falls in a normal winter.

39° / 21°Winter

58° / 36°Spring

80° / 59°Summer

62° / 42°Fall

How much snow does Killingly get?About 62 inches a winter.Rain & snow →When is the first frost?Around Oct 19, with the last in spring around Apr 25.Frost dates →Is it warmer than it used to be?+1.8° vs. the 20th century.Then & now →

NOAA U.S. Climate Normals, 1991–2020Climate in Killingly →

Schools in Killingly

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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.