Compare towns
Columbia 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
Columbia has the most people working from home (21.6%).
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 | Columbia | Groton | Killingly |
|---|---|---|---|
| Your priorities | |||
| People | |||
| Population | 5,300Lowest |
9,490 |
17,867Highest |
| Growth since 20102010 → 2020 census | — | -9.6% CT: +0.9% |
— |
| Median age | 51.3±10.3Highest 25% above CT |
39±3.7Lowest 5% below CT |
39.5±3 4% below CT |
| Columbia and Killingly are within the Census margin of error here, so we can’t say which is really higher. | |||
| Kids under 18 | 13.7%±4.3Lowest 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+ | 24.9%±5.4Highest CT: 18.5% |
16.2%±2.7Lowest CT: 18.5% |
19.7%±2.4 CT: 18.5% |
| Columbia and Killingly are within the Census margin of error here, so we can’t say which is really higher. | |||
| Bachelor’s degree+adults 25+ | 34.6% CT: 42.5% |
38.8%Highest CT: 42.5% |
22.9%Lowest CT: 42.5% |
| Enrolled in collegeshare of residents | 4.8%±2.5 CT: 7.1% |
4.2%±1.7Lowest CT: 7.1% |
5.4%±1.9Highest CT: 7.1% |
| Killingly and Columbia are within the Census margin of error here, so we can’t say which is really higher. | |||
| Cost of living | |||
| Household incomemedian | $127,000±$30kHighest 33% above CT |
$79,577±$8kLowest 17% below CT |
$84,350±$8k 12% below CT |
| Home valuemedian, owner-occupied | $361,500±$16kHighest about the CT average |
$306,600±$26k 16% below CT |
$288,600±$15kLowest 21% below CT |
| Rentmedian gross, monthly | $966±$304Lowest 35% below CT |
$1,250±$98Highest 16% below CT |
$1,044±$141 30% below CT |
| Groton and Killingly are within the Census margin of error here, so we can’t say which is really higher. | |||
| Property taxmedian, yearly | $5,228Highest 21% below CT |
$4,411 34% below CT |
$3,922Lowest 41% below CT |
| Renters paying 30%+of income on rent | 17.6%±16.2Lowest CT: 52.6% |
46.5%±11.7Highest CT: 52.6% |
42.8%±10.9 CT: 52.6% |
| Groton and Killingly are within the Census margin of error here, so we can’t say which is really higher. | |||
| Below poverty line | 6.1%Lowest CT: 10% |
18.6%Highest CT: 10% |
11.4% CT: 10% |
| Housing | |||
| Homeownersof occupied homes | 83.3%Highest CT: 66.5% |
45.4%Lowest CT: 66.5% |
71.6% CT: 66.5% |
| Typical home builtmedian year | 1984Highest 17 yrs newer than CT |
1971 4 yrs newer than CT |
1968Lowest 1 yr newer than CT |
| Getting to work | |||
| Average commuteone way | 32 minHighest 21% above CT |
18 minLowest 34% below CT |
28 min 5% above CT |
| Work from home | 21.6%±6Highest CT: 16% |
4.8%±2Lowest CT: 16% |
11.1%±2.3 CT: 16% |
| Schools | |||
| Public school scoresrank in state, math + reading | #114 of 149 in CT | — | #136 of 149 in CT |
| School district | Columbia School District | — | Connecticut Technical Education and Career System · Eastern Connecticut Regional Educational Service Center (EAS |
| High school in town | None in town | — | Killingly High School |
| Students per teacherat that high school | — | — | 11.1 |
| 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.