The Town FilesKillingworth, Connecticut
Town · population 6,174 (2020 Census)
- Median home
- $446,200
- Household income
- $140,655
- Jan low / Jul high
- 19° / 84°
- Tornadoes ≤10 mi since 1950
- 6
- Median age
- 53.3
Killingworth is a town of 6,174 people, Connecticut. The median home is worth $446,200, above the typical Connecticut town ($376,000). It ranks quieter than 99% of Connecticut towns, better for families than 98% of Connecticut towns, better for retirees than 85% of Connecticut towns.
- #2 in The 25 Quietest Small Towns in Connecticut
- #2 in The 25 Best Small Towns for Families in Connecticut
- #6 in The 21 Best Quiet, Affordable Small Towns to Retire in Connecticut
- #13 in The 50 Best Small Towns for Families in America
- #21 in The 50 Best Places for Families in America
- #24 in The 25 Best Small Towns to Retire in Connecticut
How Killingworth ranks
Percentile among Connecticut towns with at least 500 people on The Town Files lifestyle rankings. 50 is typical for the state; 90 means better than 90% of Connecticut towns.
Homes and cost of living
The median home in Killingworth is worth $446,200, above the typical Connecticut town ($376,000). Homes cost about 3.2 times the median household income of $140,655, which is more affordable than 70% of Connecticut towns. 96.7% of households own their home.
| Housing | Killingworth | Typical Connecticut town |
|---|---|---|
| Median home value | $446,200 | $376,000 |
| Median rent | — | $1,462 |
| Median household income | $140,655 | $109,167 |
| Home value ÷ income | 3.2× | 3.6× |
| Homeownership | 96.7% | 80.3% |
| Median year built | 1987 | 1969 |
| Seasonal / vacation homes | 4.0% | — |
Who lives in Killingworth
| People | Killingworth | Typical Connecticut town |
|---|---|---|
| Median age | 53.3 | 45.0 |
| Age 65 and over | 25.5% | 20.6% |
| Under 18 | 18.7% | — |
| Bachelor's degree or higher | 55.4% | 45.8% |
| Below the poverty line | 3.0% | 5.7% |
| Veterans | 4.7% | — |
| Born outside the U.S. | 0.7% | — |
| Work from home | 24.0% | 16.8% |
| Average commute | 23.9 min | 27.6 min |
| Homes with broadband | 93.0% | 93.8% |
Weather in Killingworth
July highs average 84.0°F and January lows 18.7°F. About 44.9 inches of rain and melted snow fall a year. Expect about 15 days a year at 90°F or hotter and 129 nights at or below freezing.
Tornadoes, storms and disasters
6 tornadoes have passed within 10 miles of Killingworth since 1950, compared with 8 for the typical Connecticut town. The strongest, an EF1, struck on July 31, 2009 about 5.6 miles from the town center. The most recent was on July 31, 2009.
Hail of 1 inch or larger has been reported within 10 miles 12 times; the largest was 2.00 inches on July 1, 2012.
Public schools in Killingworth
2 public schools with 675 students, about 11.2 students per teacher.
| School | Grades | Students | Per teacher |
|---|---|---|---|
| Haddam-Killingworth Middle School | 6-8 | 395 | 10.1 |
| Haddam-Killingworth Intermediate School | 4-5 | 280 | 13.3 |
Towns near Killingworth
- Madison, CT3.2 mi · 17,691 people · home $583,900
- Deep River, CT5.3 mi · 4,415 people · home $362,200
- Chester, CT5.4 mi · 3,749 people · home $442,200
- Clinton, CT6.0 mi · 13,185 people · home $380,000
- Guilford, CT7.1 mi · 22,073 people · home $515,800
- Westbrook, CT7.1 mi · 6,769 people · home $434,300
- Deep River Center, CT7.2 mi · 2,765 people · home $334,600
- Clinton, CT7.2 mi · 3,441 people · home $365,500
Killingworth questions
Is Killingworth, Connecticut a good place to retire?
On The Town Files lifestyle rankings, Killingworth scores better for retirees than 85% of Connecticut towns and quieter than 99%. 25.5% of residents are 65 or older (median age 53.3).
How much does a house cost in Killingworth?
The median owner-occupied home in Killingworth is valued at $446,200 (Census ACS 2020–2024), against a median household income of $140,655, so homes cost about 3.2 times income. Median rent is — a month.
What is the weather like in Killingworth?
July highs average 84.0°F and January lows 18.7°F (NOAA 1991–2020 normals). It gets about 44.9 inches of precipitation a year.
Does Killingworth get tornadoes?
6 tornadoes have passed within 10 miles of Killingworth since 1950 (NOAA Storm Events); the strongest was an EF1 on July 31, 2009. The typical Connecticut town has had 8.
- U.S. Census Bureau, American Community Survey 5-year estimates (2020–2024)
- U.S. Census Bureau, 2020 Census and 2025 Gazetteer (2020 / 2025)
- NOAA NCEI U.S. Climate Normals (1991–2020)
- NOAA NCEI Storm Events Database (1950–2026)
- FEMA OpenFEMA Disaster Declarations (this product uses the FEMA OpenFEMA API but is not endorsed by FEMA) (1953–2026)
- NCES Common Core of Data (2023–24)
- BLS Quarterly Census of Employment and Wages; USDA ERS county unemployment (BLS LAUS) (2000–2024)
- The Town Files lifestyle rankings, built from federal demographic, school, crime and housing data (2025)