Each edition grades its towns against each other only.
Killingly grades D overall, 138th of 151 graded towns in Connecticut, mostly because of schools. Its schools rank behind 79% of the state's. It also has a long history, with 7 places on the National Register. On incomes, just 12 of Connecticut’s 175 towns do worse. Its National Register listings include Dayville Historic District and Danielson Main Street Historic District. Only 13 of Connecticut’s 175 towns score higher on cost of living.
Where Killingly beats most towns.
Census counts: 2,803 in 1820, 17,752 in 2020. The archive holds 12 old photos and papers going back to 1907 and 6 maps from 1889 on.
7 places on the National Register of Historic Places.
Each subject compared with towns across the country (schools within Connecticut), ordered by how far Killingly is from typical.
How TownRatings grades towns →
Who provides power, water and the rest in Killingly, and how to reach them.
EPA SDWIS (Oct 9, 2026) · HIFLD + EIA-861 2025 · Census 2020 ZCTAs · NCES 2024–25 · registration: vote.gov, updated Sep 30, 2026.
Ordered by what stands out in Killingly.
Killingly sends many workers across the state line to Worcester and is healthy by national standards but behind most towns in Connecticut.
Its public schools are run by the Killingly School District.
| School | Level | Students | Letter |
|---|---|---|---|
| Killingly Intermediate SchoolLargest public middle schoolGrades 5–8 | Grades 5–8 | 692 | C |
| Killingly High SchoolLargest public high schoolGrades 9–12 | Grades 9–12 | 744 | C+ |
NCES · EDFacts · graded within CT on state tests and graduation
Expected storm and flood damage is higher than in 69% of U.S. communities. Since 1979, 6 flood insurance claims have been paid out in Killingly.
FEMA flood insurance claims · FEMA National Risk Index · OpenFEMA
Killingly has chilly, snowy winters and pleasant summers, with plenty of rain. Killingly’s July high is 82°F, near the Connecticut town median (83°F) and below the median of U.S. towns (85°F).
NOAA U.S. Climate Normals, 1991–2020
The typical Killingly home is worth about $370,000, up 2.7% in a year, 17% below the Connecticut typical home. Killingly’s median rent is $1,044 a month, where Connecticut’s towns sit at $1,451 a month and U.S. towns at $1,185 a month.
| Killingly | Connecticut towns | U.S. towns | |
|---|---|---|---|
| Median rent | $1,044 a month | $1,451 a month | $1,185 a month |
| Households that own their home | 72% | 81% | 73% |
Census ACS, 2020–24 · Zillow Home Value Index · Redfin Data Center
25% of working residents cross a state line to work, Worcester among the top destinations. Killingly has about as many jobs (8,011) as working residents, but only 1,756 people both live and work here.
About one in 4 of Killingly’s working residents works in town. 11% of Killingly residents live below the poverty line. The top destinations are Putnam (8%), Plainfield (5%) and Brooklyn (3%).
| Killingly | Connecticut towns | U.S. towns | |
|---|---|---|---|
| Working residents who work in town | 23% | 11% | 8% |
| Below the poverty line | 11% | 5.8% | 9.6% |
| Average trip to work | 28 minutes | 27 minutes | 25 minutes |
| Median household income | $84,000 | $109,000 | $80,000 |
Census LEHD 2023 · ACS
22 miles of trail in 23 parks and preserves. Only 9 of the 155 Connecticut towns we compare have a lower trail density than Killingly. The biggest park or preserve is Chase Reservoir Conservation Area, at 444 acres.
| Biggest places to walk | Trails | Acres |
|---|---|---|
| 1. Old Furnace State Park | 4 mi | 391 |
| 2. Ross Pond State Park | 0.6 mi | 72 |
| 3. Owen Bell Park | 0.6 mi | 50 |
Trails & parks © OpenStreetMap contributors · Conserved land: USGS PAD-US
Within Connecticut it is less healthy than 90% of the 154 graded towns: Connecticut sets a high bar.
Killingly beats the Connecticut average on 1 of 32 CDC measures and trails it on 10. 28% of adults get no exercise outside work in Killingly. Among 154 Connecticut towns, just 9 have a higher share of adults who have been diagnosed with depression than Killingly.
| Killingly | Connecticut towns | U.S. towns | |
|---|---|---|---|
| Get no exercise (CDC PLACES) | 28% | 22% | 25% |
| Frequent mental distress (CDC PLACES) | 18% | 15% | 17% |
| Sleep under 7 hours (CDC PLACES) | 38% | 33% | 36% |
| Frequent physical distress (CDC PLACES) | 15% | 12% | 14% |
| What stands out | Killingly | CT |
|---|---|---|
| Fewer uninsured adults | 8.3% | 10% |
| More older adults who have lost all their teeth | 15% | 9.8% |
CDC PLACES 2025 · modeled estimates for adults · CMS · HRSA
Museums, parks, gardens and other places to visit around Killingly. Close and well known come first.
Big draw15 mi LakeLake Chaubunagungamaug
Big draw35 mi Stadium & arenaGillette Stadium
Big draw38 mi MuseumThe Breakers
30 mi Ancient siteHMS Endeavour
36 mi MuseumUSS Massachusetts
38 mi MuseumMarble HouseLake Chaubunagungamaug: Bree from Worcester, MA, USA, CC BY-SA 2.0 · Gillette Stadium: Bernard Gagnon, CC BY-SA 3.0 · The Breakers: UpstateNYer, CC BY-SA 3.0 · HMS Endeavour: Samuel Atkins (c.1760-1810), Public domain · USS Massachusetts: USN, Public domain · Marble House: [email protected], Public domain
None within 15 miles of Killingly; the nearest are
About 5 of every 100 Killingly residents are enrolled in college, against 7 across Connecticut.
7 places in Killingly on the National Register of Historic Places.
15 notable people were born in Killingly.
Town in Connecticut, United States
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.
From Wikipedia, licensed CC BY-SA 4.0 · facts via Wikidata (CC0)
8 towns share a border with Killingly.
Pomfret next door grades higher for schools (A− to Killingly’s C−) and lower for cost of living (C− to B−).
| Town | CT rank | Overall | Cost | Safety | Schools | Health |
|---|---|---|---|---|---|---|
| Killingly | #138 | D | B− | — | C− | B− |
| Brooklyn | #117 | C+ | C+ | — | C | B+ |
| East Brooklyn | — | — | — | — | — | — |
| Pomfret | #69 | B+ | C− | — | A− | A |
| Putnam | #126 | C | B− | B+ | C− | C+ |
| Danielson | #147 | D− | D | — | C− | C+ |
| Plainfield | #103 | B− | C+ | A+ | C | B− |
Killingly, Brooklyn, Pomfret and Danielson report no FBI crime data of their own. East Brooklyn isn’t graded (fewer than 1,000 residents, or not enough data). Compare Killingly with a neighbor →
Short answers, built from the data on this page.
Killingly grades D overall, better than 15% of U.S. towns and #138 of 151 in Connecticut. It grades B− for health and C− for schools. Schools is its weak spot, with a C−.
That is 4.1 years of the area's median household income ($90,589 across the Putnam, CT area). Cost of living, which also weighs rents, property taxes and how many households pay 30% or more of their income for housing, grades B−.
15 notable people were born here, including Charles Lewis Tiffany and Francis Alexander.
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