Compare towns
Derby vs Groton vs Killingly
Cost, people, housing, commute and schools, side by side, each benchmarked against Connecticut.
What stands out worked out from the figures below
Derby has the most people working from home (15.1%).
Groton has the shortest commute (18 min average).
Killingly has the most kids (19.8% under 18).
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 | Derby | Groton | Killingly |
|---|---|---|---|
| Your priorities | |||
| People | |||
| Population | 12,487 |
9,490Lowest |
17,867Highest |
| Growth since 20102010 → 2020 census | -4.5%Highest CT: +0.9% |
-9.6%Lowest CT: +0.9% |
— |
| Median age | 46.4±3.1Highest 13% above CT |
39±3.7Lowest 5% below CT |
39.5±3 4% below CT |
| Kids under 18 | 14.6%±2.9Lowest CT: 20.2% |
15.7%±3.5 CT: 20.2% |
19.8%±2.3Highest 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+ | 21.1%±3.9Highest CT: 18.5% |
16.2%±2.7Lowest CT: 18.5% |
19.7%±2.4 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+ | 35.6% CT: 42.5% |
38.8%Highest CT: 42.5% |
22.9%Lowest CT: 42.5% |
| Enrolled in collegeshare of residents | 5.9%±2Highest CT: 7.1% |
4.2%±1.7Lowest CT: 7.1% |
5.4%±1.9 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 | $79,500±$11kLowest 17% below CT |
$79,577±$8k 17% below CT |
$84,350±$8kHighest 12% 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 | $256,700±$21kLowest 30% below CT |
$306,600±$26kHighest 16% below CT |
$288,600±$15k 21% 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 | $1,452±$95Highest about the CT average |
$1,250±$98 16% below CT |
$1,044±$141Lowest 30% below CT |
| Property taxmedian, yearly | $5,510Highest 17% below CT |
$4,411 34% below CT |
$3,922Lowest 41% below CT |
| Renters paying 30%+of income on rent | 53.9%±12.6Highest CT: 52.6% |
46.5%±11.7 CT: 52.6% |
42.8%±10.9Lowest 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 | 10.8%Lowest CT: 10% |
18.6%Highest CT: 10% |
11.4% CT: 10% |
| Housing | |||
| Homeownersof occupied homes | 61.9% CT: 66.5% |
45.4%Lowest CT: 66.5% |
71.6%Highest CT: 66.5% |
| Typical home builtmedian year | 1967Lowest same as CT |
1971Highest 4 yrs newer than CT |
1968 1 yr newer than CT |
| Getting to work | |||
| Average commuteone way | 27 min about the CT average |
18 minLowest 34% below CT |
28 minHighest 5% above CT |
| Work from home | 15.1%±4.8Highest CT: 16% |
4.8%±2Lowest CT: 16% |
11.1%±2.3 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 | #138 of 149 in CT | — | #136 of 149 in CT |
| School district | Derby School District | — | Connecticut Technical Education and Career System · Eastern Connecticut Regional Educational Service Center (EAS |
| High school in town | Derby High School | — | Killingly High School |
| Students per teacherat that high school | 9.7Lowest |
— | 11.1Highest |
| 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.