Compare towns

Plainfield vs Killingly vs Old Lyme

Cost, people, housing, commute and schools, side by side, each benchmarked against Connecticut.

What stands out worked out from the figures below

Plainfield has the youngest population (median age 37).
Killingly has the most renters (28.4% rent).
Old Lyme has the most people working from home (24.2%).

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.

MeasurePlainfieldKillinglyOld Lyme
People
Population
15,141
17,867Highest
7,679Lowest
Median age
37±4.5Lowest
10% below CT
39.5±3
4% below CT
50.6±3.3Highest
23% above CT
Kids under 18
19.4%±2.6Lowest
CT: 20.2%
19.8%±2.3
CT: 20.2%
20.3%±3.1Highest
CT: 20.2%
Old Lyme and Killingly are within the Census margin of error here, so we can’t say which is really higher.
Age 65+
16.6%±2.4Lowest
CT: 18.5%
19.7%±2.4
CT: 18.5%
26.4%±3.1Highest
CT: 18.5%
Bachelor’s degree+adults 25+
15%Lowest
CT: 42.5%
22.9%
CT: 42.5%
56.5%Highest
CT: 42.5%
Enrolled in collegeshare of residents
5.6%±1.8Highest
CT: 7.1%
5.4%±1.9
CT: 7.1%
2.4%±1.2Lowest
CT: 7.1%
Plainfield and Killingly are within the Census margin of error here, so we can’t say which is really higher.
Cost of living
Household incomemedian
$76,993±$8kLowest
20% below CT
$84,350±$8k
12% below CT
$131,899±$11kHighest
38% above CT
Home valuemedian, owner-occupied
$272,100±$16kLowest
26% below CT
$288,600±$15k
21% below CT
$484,200±$21kHighest
32% above CT
Rentmedian gross, monthly
$1,204±$70
19% below CT
$1,044±$141Lowest
30% below CT
$2,238±$295Highest
50% above CT
Property taxmedian, yearly
$4,209
37% below CT
$3,922Lowest
41% below CT
$6,284Highest
5% below CT
Renters paying 30%+of income on rent
39.8%±9.5Lowest
CT: 52.6%
42.8%±10.9
CT: 52.6%
51.6%±17.2Highest
CT: 52.6%
Old Lyme and Killingly are within the Census margin of error here, so we can’t say which is really higher.
Below poverty line
8.7%
CT: 10%
11.4%Highest
CT: 10%
2.9%Lowest
CT: 10%
Housing
Homeownersof occupied homes
73.6%
CT: 66.5%
71.6%Lowest
CT: 66.5%
88.8%Highest
CT: 66.5%
Typical home builtmedian year
1971Highest
4 yrs newer than CT
1968
1 yr newer than CT
1965Lowest
2 yrs older than CT
Getting to work
Average commuteone way
27 minLowest
about the CT average
28 minHighest
5% above CT
27 min
about the CT average
Work from home
10%±4Lowest
CT: 16%
11.1%±2.3
CT: 16%
24.2%±5.7Highest
CT: 16%
Schools
Public school scoresrank in state, math + reading #131 of 149 in CT #136 of 149 in CT #10 of 149 in CT
School district Plainfield School District Connecticut Technical Education and Career System · Eastern Connecticut Regional Educational Service Center (EAS Regional School District 18
High school in town Plainfield High School Killingly High School Lyme-Old Lyme High School
Students per teacherat that high school
10.3
11.1Highest
9.6Lowest
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.