Each edition grades its towns against each other only.
Home to 3 places on the National Register of Historic Places.
For most people who can afford it, yes. Killingworth grades A− overall, 52nd of 151 graded towns in Connecticut. It is healthier than 95% of U.S. towns. The median household earns $141K and its schools outperform 78% of the state's. What holds it back is price: the typical home is worth about $632K, 6.6 years of the Hartford metro’s $95K median household income. 26% of the land in Killingworth is conserved, above both the Connecticut town median (14%) and the median of U.S. towns (4.3%). Only 17 of Connecticut’s 175 towns score higher on hazard risk. Cockaponset State Forest, at 2,209 acres with 15 miles of trail, is the biggest park or preserve.
Where Killingworth beats most towns.
Oak Lodge| School | Grades | Students |
|---|---|---|
| Haddam-Killingworth Intermediate School | 4–5 | 280 |
| Killingworth Elementary School | PK–3 | 257 |
| Haddam-Killingworth Middle School | 6–8 | 423 |
Census counts: 2,156 in 1790, a low of 482 in 1930, 6,174 in 2020. The archive holds 10 old photos and papers going back to 2007 and 5 maps from 1893 on.
3 places on the National Register of Historic Places.
Each subject compared with towns across the country (schools within Connecticut), ordered by how far Killingworth is from typical.
How TownRatings grades towns →
Museums, parks, gardens and other places to visit around Killingworth. Close and well known come first.
20 mi Stadium & arenaYale Bowl
8 mi State parkGillette Castle State Park
26 mi Theme parkLake Compounce
28 mi Stadium & arenaPeoplesBank Arena
27 mi Stadium & arenaMohegan Sun Arena
27 mi Stadium & arenaPratt & Whitney StadiumYale Bowl: Kenneth Zirkel, CC BY-SA 4.0 · Gillette Castle State Park: Original uploader was Kevinpepin at en.wikipedia, Public domain · Lake Compounce: Wildcat1 at English Wikipedia, Public domain · PeoplesBank Arena: PeoplesBank Arena, CC BY 2.5 · Mohegan Sun Arena: Bbjeter, CC BY-SA 3.0 · Pratt & Whitney Stadium: Quintin Soloviev, CC BY 4.0
Who provides power, water and the rest in Killingworth, 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 Killingworth.
Killingworth has less food insecurity than most of Connecticut and has added a third more jobs in ten years, but it has homes that cost more against local pay than most of Connecticut.
73 miles of trail in 12 parks and preserves. Killingworth’s trail density is 2.1 miles per square mile, above both Connecticut’s towns (1.3) and U.S. towns (0.4).
| Biggest places to walk | Trails | Acres |
|---|---|---|
| 1. Cockaponset State Forest | 15 mi | 2,209 |
| 2. Chatfield Hollow State Park | 7.5 mi | 410 |
| 3. Lake Hammonasset Public Watershed Land | 6.7 mi | 799 |
Trails & parks © OpenStreetMap contributors · Conserved land: USGS PAD-US
Its public schools are run by the Regional School District 17. Two of its 3 schools are below, each with why it’s listed.
| School | Level | Students | Letter |
|---|---|---|---|
| Haddam-Killingworth Middle SchoolLargest public middle schoolGrades 6–8 | Grades 6–8 | 423 | A− |
| Killingworth Elementary SchoolTop results in townGrades PK–3 | Grades PK–3 | 257 | A |
NCES · EDFacts · graded within CT on state tests and graduation
Its widest gap with Connecticut is food insecurity: 6.2% of its 5,068 adults worry about having enough food, against 14.9% statewide.
29% of Killingworth adults sleep under 7 hours. Killingworth beats the Connecticut average on 16 of 32 CDC measures and trails it on 2. 8.5% of Killingworth adults smoke cigarettes.
| Killingworth | Connecticut towns | U.S. towns | |
|---|---|---|---|
| Sleep under 7 hours (CDC PLACES) | 29% | 34% | 36% |
| Frequent mental distress (CDC PLACES) | 13% | 15% | 17% |
| Yearly checkup (CDC PLACES) | 84% | 81% | 79% |
| Obesity (CDC PLACES) | 28% | 30% | 35% |
| What stands out | Killingworth | CT |
|---|---|---|
| Fewer adults facing food insecurity | 6.2% | 14.9% |
| Fewer uninsured adults | 4.7% | 10% |
| More adults who have had cancer | 11.4% | 8.5% |
CDC PLACES 2025 · modeled estimates for adults · CMS · HRSA
At 6.6 years of the Hartford metro’s $95K median household income, the typical home (about $632K) costs more against local pay than in 85% of Connecticut towns; that ratio is one input to its C− for cost of living.
97% of households own their home in Killingworth. Typical home values rose 6.1% in the year to September 2026.
Census ACS, 2020–24 · Zillow Home Value Index · Redfin Data Center
Jobs based here grew from 682 in 2013 to 911. 24% of workers work from home, against 16% across Connecticut.
Most working residents leave Killingworth for work: only 6% work in town. Jobs based in Killingworth grew to 911 in 2023, 229 more than in 2013. The average trip to work in Killingworth is 24 minutes.
| Killingworth | Connecticut towns | U.S. towns | |
|---|---|---|---|
| Median household income | $141,000 | $109,000 | $80,000 |
| Below the poverty line | 3% | 5.8% | 9.6% |
| Average trip to work | 24 minutes | 27 minutes | 25 minutes |
| Working residents who work in town | 6% | 11% | 8% |
Census LEHD 2023 · ACS
Killingworth has chilly winters and pleasant summers. July afternoons reach 83° and January nights drop to 20°.
NOAA U.S. Climate Normals, 1991–2020
Expected storm and flood damage is lower than in 64% of U.S. communities. Since 1979, 5 flood insurance claims have been paid out in Killingworth.
FEMA flood insurance claims · FEMA National Risk Index · OpenFEMA
1 within 15 miles of the center of Killingworth
About 3 of every 100 Killingworth residents are enrolled in college, against 7 across Connecticut.
Where Killingworth’s working residents go each day. Line width shows the share.
Census LEHD 2023
3 places in Killingworth on the National Register of Historic Places.
6 notable people were born in Killingworth.
Town in Connecticut, United States
Killingworth is a town in Middlesex County, Connecticut, United States. The town is part of the Lower Connecticut River Valley Planning Region. The population was 6,174 at the 2020 United States census.
From Wikipedia, licensed CC BY-SA 4.0 · facts via Wikidata (CC0)
5 towns share a border with Killingworth.
Durham next door grades lower for schools (B− to Killingworth’s A−) and higher for cost of living (B− to C−).
| Town | CT rank | Overall | Cost | Safety | Schools | Health |
|---|---|---|---|---|---|---|
| Killingworth | #52 | A− | C− | — | A− | A+ |
| Madison | #9 | A | D | A+ | A | A+ |
| Clinton | #83 | B | C | C+ | B | A |
| Durham | #48 | A− | B− | — | B− | A |
| Haddam | #62 | B+ | D | — | A− | A+ |
| Westbrook | #39 | A− | C− | — | B+ | A |
Killingworth, Durham, Haddam and Westbrook report no FBI crime data of their own. Compare Killingworth with a neighbor →
Short answers, built from the data on this page.
For most people who can afford it, yes. Killingworth grades A− overall, better than 75% of U.S. towns and #52 of 151 in Connecticut. It grades A+ for health and A− for schools. Cost of living is its weak spot, with a C−.
Yes. Cost of living, which also weighs rents, property taxes and how many households pay 30% or more of their income for housing, grades C−.
6 notable people were born here, including Camille Kostek and Washington F. Willcox.
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