Compare towns
Killingly vs Plainfield vs Thompson vs Seymour
Cost, people, housing, commute and schools, side by side, each benchmarked against Connecticut.
What stands out worked out from the figures below
Killingly has the most renters (28.4% rent).
Plainfield has the youngest population (median age 37).
Thompson has the oldest population (median age 54.1).
Seymour has the most expensive homes ($370k median).
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 | Killingly | Plainfield | Thompson | Seymour |
|---|---|---|---|---|
| Your priorities | ||||
| People | ||||
| Population | 17,867Highest |
15,141 |
9,337Lowest |
16,889 |
| Median age | 39.5±3 4% below CT |
37±4.5Lowest 10% below CT |
54.1±2.2Highest 32% above CT |
41.6±3 about the CT average |
| Kids under 18 | 19.8%±2.3Highest CT: 20.2% |
19.4%±2.6 CT: 20.2% |
11.4%±2.8Lowest CT: 20.2% |
19.3%±3.9 CT: 20.2% |
| Killingly and Plainfield are within the Census margin of error here, so we can’t say which is really higher. | ||||
| Age 65+ | 19.7%±2.4 CT: 18.5% |
16.6%±2.4Lowest CT: 18.5% |
24.4%±4.3Highest CT: 18.5% |
16.8%±2.4 CT: 18.5% |
| Thompson and Killingly are within the Census margin of error here, so we can’t say which is really higher. | ||||
| Bachelor’s degree+adults 25+ | 22.9% CT: 42.5% |
15%Lowest CT: 42.5% |
21.9% CT: 42.5% |
33.3%Highest CT: 42.5% |
| Enrolled in collegeshare of residents | 5.4%±1.9 CT: 7.1% |
5.6%±1.8 CT: 7.1% |
2.9%±1.3Lowest CT: 7.1% |
6.4%±2.1Highest CT: 7.1% |
| Seymour and Plainfield are within the Census margin of error here, so we can’t say which is really higher. | ||||
| Cost of living | ||||
| Household incomemedian | $84,350±$8k 12% below CT |
$76,993±$8kLowest 20% below CT |
$93,629±$18k about the CT average |
$107,708±$15kHighest 12% above CT |
| Seymour and Thompson are within the Census margin of error here, so we can’t say which is really higher. | ||||
| Home valuemedian, owner-occupied | $288,600±$15k 21% below CT |
$272,100±$16kLowest 26% below CT |
$291,900±$24k 20% below CT |
$370,000±$19kHighest about the CT average |
| Rentmedian gross, monthly | $1,044±$141 30% below CT |
$1,204±$70 19% below CT |
$1,012±$344Lowest 32% below CT |
$1,608±$86Highest 8% above CT |
| Property taxmedian, yearly | $3,922 41% below CT |
$4,209 37% below CT |
$3,822Lowest 42% below CT |
$6,635Highest about the CT average |
| Renters paying 30%+of income on rent | 42.8%±10.9 CT: 52.6% |
39.8%±9.5Lowest CT: 52.6% |
54%±18.7Highest CT: 52.6% |
45.2%±17.3 CT: 52.6% |
| Thompson and Seymour are within the Census margin of error here, so we can’t say which is really higher. | ||||
| Below poverty line | 11.4%Highest CT: 10% |
8.7% CT: 10% |
5.9%Lowest CT: 10% |
6.7% CT: 10% |
| Housing | ||||
| Homeownersof occupied homes | 71.6%Lowest CT: 66.5% |
73.6% CT: 66.5% |
84.3%Highest CT: 66.5% |
74.2% CT: 66.5% |
| Typical home builtmedian year | 1968 1 yr newer than CT |
1971 4 yrs newer than CT |
1963Lowest 4 yrs older than CT |
1973Highest 6 yrs newer than CT |
| Getting to work | ||||
| Average commuteone way | 28 min 5% above CT |
27 minLowest about the CT average |
32 min 20% above CT |
32 minHighest 21% above CT |
| Work from home | 11.1%±2.3 CT: 16% |
10%±4Lowest CT: 16% |
13.1%±4.4 CT: 16% |
16.4%±3.5Highest CT: 16% |
| Seymour and Thompson 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 | #131 of 149 in CT | #130 of 149 in CT | #105 of 149 in CT |
| School district | Connecticut Technical Education and Career System · Eastern Connecticut Regional Educational Service Center (EAS | Plainfield School District | Thompson School District | Seymour School District |
| High school in town | Killingly High School | Plainfield High School | Tourtellotte Memorial High School | Seymour High School |
| Students per teacherat that high school | 11.1 |
10.3 |
7.9Lowest |
11.8Highest |
| On TownTapestry | ||||
| Old photos in History | None yet | 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.



