Compare towns
Old Lyme vs Killingworth
Cost, people, housing, commute and schools, side by side, each benchmarked against Connecticut.
What stands out worked out from the figures below
Old Lyme has the most kids (20.3% under 18).
Killingworth has the shortest commute (24 min average).
What matters to you?
Pick a few. We’ll pull those rows to the top and mark which town comes out ahead on each. There’s no overall score: what matters is up to you.
| Measure | Old Lyme | Killingworth |
|---|---|---|
| Your priorities | ||
| People | ||
| Population | 7,679Highest |
6,240Lowest |
| Median age | 50.6±3.3Lowest 23% above CT |
53.3±4.6Highest 30% above CT |
| Killingworth and Old Lyme are within the Census margin of error here, so we can’t say which is really higher. | ||
| Kids under 18 | 20.3%±3.1Highest CT: 20.2% |
18.7%±4.6Lowest CT: 20.2% |
| Old Lyme and Killingworth are within the Census margin of error here, so we can’t say which is really higher. | ||
| Age 65+ | 26.4%±3.1Highest CT: 18.5% |
25.5%±4.9Lowest CT: 18.5% |
| Old Lyme and Killingworth are within the Census margin of error here, so we can’t say which is really higher. | ||
| Bachelor’s degree+adults 25+ | 56.5%Highest CT: 42.5% |
55.4%Lowest CT: 42.5% |
| Enrolled in collegeshare of residents | 2.4%±1.2Lowest CT: 7.1% |
3.2%±1.5Highest CT: 7.1% |
| Killingworth and Old Lyme are within the Census margin of error here, so we can’t say which is really higher. | ||
| Cost of living | ||
| Household incomemedian | $131,899±$11kLowest 38% above CT |
$140,655±$16kHighest 47% above CT |
| Killingworth and Old Lyme are within the Census margin of error here, so we can’t say which is really higher. | ||
| Home valuemedian, owner-occupied | $484,200±$21kHighest 32% above CT |
$446,200±$56kLowest 22% above CT |
| Old Lyme and Killingworth are within the Census margin of error here, so we can’t say which is really higher. | ||
| Rentmedian gross, monthly | $2,238±$295 50% above CT |
— |
| Property taxmedian, yearly | $6,284Lowest 5% below CT |
$6,550Highest about the CT average |
| Renters paying 30%+of income on rent | 51.6%±17.2Highest CT: 52.6% |
45.2%±15.8Lowest CT: 52.6% |
| Old Lyme and Killingworth are within the Census margin of error here, so we can’t say which is really higher. | ||
| Below poverty line | 2.9%Lowest CT: 10% |
3%Highest CT: 10% |
| Housing | ||
| Homeownersof occupied homes | 88.8%Lowest CT: 66.5% |
96.7%Highest CT: 66.5% |
| Typical home builtmedian year | 1965Lowest 2 yrs older than CT |
1987Highest 20 yrs newer than CT |
| Getting to work | ||
| Average commuteone way | 27 minHighest about the CT average |
24 minLowest 10% below CT |
| Work from home | 24.2%±5.7Highest CT: 16% |
24%±6.8Lowest CT: 16% |
| Old Lyme and Killingworth are within the Census margin of error here, so we can’t say which is really higher. | ||
| Schools | ||
| Public school scoresrank in state, math + reading | #10 of 149 in CT | #29 of 149 in CT |
| School district | Regional School District 18 | Regional School District 17 |
| High school in town | Lyme-Old Lyme High School | None in town |
| Students per teacherat that high school | 9.6 |
— |
| On TownTapestry | ||
| Old photos in History | None yet | None yet |
CT average · Sources: U.S. Census Bureau, American Community Survey 5-year estimates 2020–2024; 2010 & 2020 decennial census; NCES Common Core of Data. “±” is the Census margin of error. Property tax is top-coded by the Census at $10,000+. School rank compares math and reading proficiency against the state average.

