Compare towns
Groton vs Killingly vs Derby
Cost, people, housing, commute and schools, side by side, each benchmarked against Connecticut.
What stands out worked out from the figures below
Groton has the shortest commute (18 min average).
Killingly has the most kids (19.8% under 18).
Derby has the most people working from home (15.1%).
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 | Groton | Killingly | Derby |
|---|---|---|---|
| Your priorities | |||
| People | |||
| Population | 9,490Lowest |
17,867Highest |
12,487 |
| Growth since 20102010 → 2020 census | -9.6%Lowest CT: +0.9% |
— | -4.5%Highest CT: +0.9% |
| Median age | 39±3.7Lowest 5% below CT |
39.5±3 4% below CT |
46.4±3.1Highest 13% above CT |
| Kids under 18 | 15.7%±3.5 CT: 20.2% |
19.8%±2.3Highest CT: 20.2% |
14.6%±2.9Lowest CT: 20.2% |
| Killingly and Groton are within the Census margin of error here, so we can’t say which is really higher. | |||
| Age 65+ | 16.2%±2.7Lowest CT: 18.5% |
19.7%±2.4 CT: 18.5% |
21.1%±3.9Highest CT: 18.5% |
| Derby and Killingly are within the Census margin of error here, so we can’t say which is really higher. | |||
| Bachelor’s degree+adults 25+ | 38.8%Highest CT: 42.5% |
22.9%Lowest CT: 42.5% |
35.6% CT: 42.5% |
| Enrolled in collegeshare of residents | 4.2%±1.7Lowest CT: 7.1% |
5.4%±1.9 CT: 7.1% |
5.9%±2Highest CT: 7.1% |
| Derby and Killingly are within the Census margin of error here, so we can’t say which is really higher. | |||
| Cost of living | |||
| Household incomemedian | $79,577±$8k 17% below CT |
$84,350±$8kHighest 12% below CT |
$79,500±$11kLowest 17% below CT |
| Killingly and Groton are within the Census margin of error here, so we can’t say which is really higher. | |||
| Home valuemedian, owner-occupied | $306,600±$26kHighest 16% below CT |
$288,600±$15k 21% below CT |
$256,700±$21kLowest 30% below CT |
| Groton and Killingly are within the Census margin of error here, so we can’t say which is really higher. | |||
| Rentmedian gross, monthly | $1,250±$98 16% below CT |
$1,044±$141Lowest 30% below CT |
$1,452±$95Highest about the CT average |
| Property taxmedian, yearly | $4,411 34% below CT |
$3,922Lowest 41% below CT |
$5,510Highest 17% below CT |
| Renters paying 30%+of income on rent | 46.5%±11.7 CT: 52.6% |
42.8%±10.9Lowest CT: 52.6% |
53.9%±12.6Highest CT: 52.6% |
| Derby and Groton are within the Census margin of error here, so we can’t say which is really higher. | |||
| Below poverty line | 18.6%Highest CT: 10% |
11.4% CT: 10% |
10.8%Lowest CT: 10% |
| Housing | |||
| Homeownersof occupied homes | 45.4%Lowest CT: 66.5% |
71.6%Highest CT: 66.5% |
61.9% CT: 66.5% |
| Typical home builtmedian year | 1971Highest 4 yrs newer than CT |
1968 1 yr newer than CT |
1967Lowest same as CT |
| Getting to work | |||
| Average commuteone way | 18 minLowest 34% below CT |
28 minHighest 5% above CT |
27 min about the CT average |
| Work from home | 4.8%±2Lowest CT: 16% |
11.1%±2.3 CT: 16% |
15.1%±4.8Highest CT: 16% |
| Derby and Killingly 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 | — | #136 of 149 in CT | #138 of 149 in CT |
| School district | — | Connecticut Technical Education and Career System · Eastern Connecticut Regional Educational Service Center (EAS | Derby School District |
| High school in town | — | Killingly High School | Derby High School |
| Students per teacherat that high school | — | 11.1Highest |
9.7Lowest |
| On TownTapestry | |||
| Old photos in History | None yet | 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.