Compare towns

Killingly vs Derby vs Willimantic vs Plainfield

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 highest household income ($84k).
Derby has the most people working from home (15.1%).
Willimantic has the most renters (65.1% rent).
Plainfield has the most homeowners (73.6%).

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.

MeasureKillinglyDerbyWillimanticPlainfield
People
Population
17,867
12,487Lowest
18,096Highest
15,141
Growth since 20102010 → 2020 census —
-4.5%Lowest
CT: +0.9%
+2.3%Highest
CT: +0.9%
—
Median age
39.5±3
4% below CT
46.4±3.1Highest
13% above CT
31.3±2.7Lowest
24% below CT
37±4.5
10% below CT
Kids under 18
19.8%±2.3
CT: 20.2%
14.6%±2.9Lowest
CT: 20.2%
20.6%±2.5Highest
CT: 20.2%
19.4%±2.6
CT: 20.2%
Willimantic and Killingly 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%
21.1%±3.9Highest
CT: 18.5%
11%±1.7Lowest
CT: 18.5%
16.6%±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+
22.9%
CT: 42.5%
35.6%Highest
CT: 42.5%
24.2%
CT: 42.5%
15%Lowest
CT: 42.5%
Enrolled in collegeshare of residents
5.4%±1.9Lowest
CT: 7.1%
5.9%±2
CT: 7.1%
19.1%±2.1Highest
CT: 7.1%
5.6%±1.8
CT: 7.1%
Cost of living
Household incomemedian
$84,350±$8kHighest
12% below CT
$79,500±$11k
17% below CT
$45,962±$7kLowest
52% below CT
$76,993±$8k
20% below CT
Killingly and Derby are within the Census margin of error here, so we can’t say which is really higher.
Home valuemedian, owner-occupied
$288,600±$15kHighest
21% below CT
$256,700±$21k
30% below CT
$190,900±$17kLowest
48% below CT
$272,100±$16k
26% below CT
Killingly and Plainfield are within the Census margin of error here, so we can’t say which is really higher.
Rentmedian gross, monthly
$1,044±$141Lowest
30% below CT
$1,452±$95Highest
about the CT average
$1,063±$68
29% below CT
$1,204±$70
19% below CT
Property taxmedian, yearly
$3,922Lowest
41% below CT
$5,510Highest
17% below CT
$4,678
30% below CT
$4,209
37% below CT
Renters paying 30%+of income on rent
42.8%±10.9
CT: 52.6%
53.9%±12.6
CT: 52.6%
55.9%±8.1Highest
CT: 52.6%
39.8%±9.5Lowest
CT: 52.6%
Willimantic and Derby are within the Census margin of error here, so we can’t say which is really higher.
Below poverty line
11.4%
CT: 10%
10.8%
CT: 10%
23.4%Highest
CT: 10%
8.7%Lowest
CT: 10%
Housing
Homeownersof occupied homes
71.6%
CT: 66.5%
61.9%
CT: 66.5%
34.9%Lowest
CT: 66.5%
73.6%Highest
CT: 66.5%
Typical home builtmedian year
1968
1 yr newer than CT
1967
same as CT
1953Lowest
14 yrs older than CT
1971Highest
4 yrs newer than CT
Getting to work
Average commuteone way
28 minHighest
5% above CT
27 min
about the CT average
23 minLowest
12% below CT
27 min
about the CT average
Work from home
11.1%±2.3
CT: 16%
15.1%±4.8Highest
CT: 16%
6.2%±2Lowest
CT: 16%
10%±4
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 — #131 of 149 in CT
School district Connecticut Technical Education and Career System · Eastern Connecticut Regional Educational Service Center (EAS Derby School District — Plainfield School District
High school in town Killingly High School Derby High School — Plainfield High School
Students per teacherat that high school
11.1Highest
9.7Lowest
—
10.3
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.