Killingworth ZIP Codes — Middlesex County, CT

There is one unique ZIP code in Killingworth, Connecticut and it is 06419. Area code: 860.
1
ZIP codes
35.33
sq mi land
0.45
sq mi water
860
area code
Killingworth, CT ZIP code map

About Killingworth, CT

Killingworth, Connecticut, is a quaint town located in Middlesex County. With a small community feel, it offers a peaceful lifestyle amidst picturesque surroundings. This charming location is known for its rich history and beautiful landscapes, attracting both residents and visitors alike.

Location & geography

Killingworth is positioned in the south-central part of Connecticut, approximately 18 miles from New Haven and 12 miles from the coastal town of Old Saybrook. The total land area of the town is 35.33 square miles, accompanied by a water area of 0.45 square miles, contributing to its serene natural environment. The terrain primarily consists of rolling hills and wooded areas, making it an attractive location for outdoor activities.

Community & economy

The character of Killingworth can be described as close-knit and community-oriented, with a strong focus on family and local events. Key industries include agriculture and small businesses, which play a significant role in the town's economy. Daily life in Killingworth is characterized by its rural charm, with residents often engaging in local traditions and enjoying outdoor recreation.

Transportation

Killingworth is accessible via several highways, including Route 81 and Route 148, which connect residents to larger metropolitan areas. The nearest major airport is Bradley International Airport, located about 30 miles to the north. Public transportation options may be limited, making personal vehicles the primary mode of travel.

History

Founded in the 17th century, Killingworth has a rich historical background that reflects the early colonial life in Connecticut. Key industries historically included agriculture and shipbuilding, taking advantage of the town's natural resources. Notable events include the establishment of several local organizations aimed at preserving the town's heritage and fostering community spirit.

Did you know?

One surprising fact about Killingworth is that it was once part of the larger town of Haddam before becoming its own entity in 1838. Additionally, the town hosts local fairs and events that celebrate its agricultural roots and foster community connections.

ZIP codes for Killingworth, CT (1)
ZIP code City County Map
06419 Killingworth Middlesex View map

Demographics & statistics

6,216
Population
51.3
Median age
$124,620
Median household income
$69,876
Per capita income
$377,600
Median home value
$898
Median monthly rent
97.6%
Home ownership
3.5%
Poverty rate
2.8%
Unemployment
2,544
Housing units
52.4%
Bachelor's or higher

Age distribution

Male Female
152
Under 5
154
182
5–9
184
140
10–14
141
159
15–19
160
127
20–24
129
291
25–34
293
245
35–44
247
429
45–54
434
343
55–59
347
351
60–64
354
381
65–74
384
214
75–84
216
79
85+
80
← Male
Female →

Age summary

GroupCount%
Under 181,13918.3%
18 and over5,07781.7%
65 and over1,35421.8%
Median age51.3 years

Race & ethnicity

White 86.7%
Two or more races 5.9%
Hispanic or Latino 5.2%
Asian 1.6%
Other race 0.6%
GroupCount%
White5,68786.7%
Two or more races3865.9%
Hispanic or Latino3435.2%
Asian1041.6%
Other race390.6%

Household income

Under $10k 0.6%
$10k–$15k 4.5%
$15k–$25k 1.9%
$25k–$35k 3.9%
$35k–$50k 6.6%
$50k–$75k 7.6%
$75k–$100k 13.0%
$100k–$150k 24.3%
$150k–$200k 12.9%
$200k+ 24.7%
Range% of households
Under $10k0.6%
$10k–$15k4.5%
$15k–$25k1.9%
$25k–$35k3.9%
$35k–$50k6.6%
$50k–$75k7.6%
$75k–$100k13.0%
$100k–$150k24.3%
$150k–$200k12.9%
$200k+24.7%
Median income$124,620

Housing

Home values

Under $50k 4.1%
$50k–$100k 2.1%
$100k–$150k 5.1%
$150k–$200k 1.9%
$200k–$300k 19.0%
$300k–$500k 39.3%
$500k–$1M 22.9%
$1M+ 5.6%

Housing overview

MetricValue
Median home value$377,600
Median rent / month$898
Owner occupied97.6%
Renter occupied2.4%
Vacant10.2%
Single-family detached92.8%
Large apartment buildings0.0%
Mobile homes6.0%
Median rooms7.1
Avg household size (owned)2.69

Year built

Era%
2020 or later0.0%
2010–20198.0%
2000–20099.5%
1990–199919.9%
1980–198915.6%
1970–197917.0%
1960–19698.3%
1950–195910.7%
1940–19495.0%
1939 or earlier6.0%

Bedrooms

Size% of units
No bedroom (studio)0.0%
1 bedroom2.0%
2 bedrooms22.6%
3 bedrooms41.2%
4 bedrooms23.4%
5+ bedrooms10.9%

Vehicles per household

Vehicles% of households
No vehicle1.8%
1 vehicle18.7%
2 vehicles34.6%
3 or more44.9%

Heating fuel

Fuel type%
Utility gas2.7%
Electricity2.4%
Propane / LP gas23.0%
Fuel oil64.0%
Wood4.3%
Solar0.4%

Households & families

Household typeCount%
Married-couple family1,71173.3%
Cohabiting couple984.2%
Male householder, no spouse1938.3%
Female householder, no spouse33314.3%
Households with children under 1861926.5%
Households with seniors (65+)97941.9%
Average household size2.66

Marital status

StatusMaleFemale
Never married29.1%15.1%
Married65.1%67.6%
Separated0.0%0.0%
Widowed0.0%12.3%
Divorced5.8%5.1%

Education

Less than 9th grade 0.3%
Some HS, no diploma 1.1%
HS graduate 24.0%
Some college, no degree 15.2%
Associate's degree 7.0%
Bachelor's degree 27.5%
Graduate / professional 24.9%
Metric%
HS diploma or higher98.6%
Bachelor's or higher52.4%

School enrollment (ages 3–17)

TypeCount%
Nursery / preschool645.8%
Kindergarten918.2%
Elementary school48143.3%
High school30727.6%
College / grad school16815.1%

Employment

Industry of employment

Education & healthcare 31.7%
Professional & management 12.3%
Retail trade 8.7%
Manufacturing 8.2%
Transportation & utilities 7.5%
Finance & real estate 6.3%
Arts, food & hospitality 5.9%
Construction 5.3%
Public administration 4.9%
Other services 4.6%
Information 2.0%
Wholesale trade 1.5%
Agriculture & mining 1.0%

Occupation

Category%
Management, business & arts56.2%
Service8.7%
Sales & office16.0%
Natural resources & construction10.2%
Production & transportation9.0%

Employment type

Type%
Private sector72.5%
Government16.1%
Self-employed11.5%
Unpaid family workers0.0%

Commute

Method%
Drive alone76.4%
Carpool5.9%
Public transit0.3%
Walk0.9%
Other means1.4%
Avg commute (minutes)25.0

Poverty

All people 3.5%
Under 18 years 0.0%
18 and over 4.3%
Married-couple families 0.7%
Female-led households 0.0%

Income support

Source% of households
Social Security37.8%
Retirement income31.9%
Supplemental Security3.9%
Cash public assistance5.8%
Food stamps / SNAP1.2%

Health indicators

Condition%
High blood pressure31.2%
High cholesterol34.3%
Heart disease5.7%
Stroke2.4%
Asthma9.6%
Arthritis25.7%
Kidney disease2.5%
Pulmonary disease5.3%
Cancer8.0%
Behavior / access%
Binge drinking16.7%
No physical activity14.4%
Less than 7 hrs sleep28.8%
Fair or poor health8.5%
Poor mental health12.1%
Poor physical health7.7%
No health insurance5.8%
Visited doctor (checkup)78.9%
Visited dentist78.4%
Cholesterol screening94.6%
Teeth loss6.9%

Veterans & disability

VeteransCount%
Civilian veterans1993.9%
Disability%
Any disability9.4%
Under 180.0%
18–64 years5.7%
65 and over27.3%

Health insurance coverage

Type%
Private insurance86.3%
Public insurance24.5%
Uninsured under 190.0%

Language & origin

Language spoken at home (age 5+)

LanguageCount%
English only5,91095.1%
Spanish360.6%
Other Indo-European140.2%
Asian & Pacific Islander220.4%
Other languages00.0%

Place of birth & citizenship

OriginCount%
Native born (US)6,10798.2%
Born in same state6,06197.5%
Born in different state4,47271.9%
Foreign born460.7%
Naturalized citizen1091.8%
Not a US citizen109100.0%

Ancestry

AncestryCount%
Italian1,62026.1%
French66610.7%
Norwegian2664.3%
Arab1211.9%
German811.3%
AncestryCount%
Irish651%
English641%
Dutch370.6%
Polish190.3%

Technology access

Metric% of households
Computer access37.6%
Internet access93.7%

Source: U.S. Census Bureau, American Community Survey 2025 estimates.

Frequently asked questions
What ZIP codes does Killingworth, CT have?
Killingworth, CT has one ZIP code: 06419. Each ZIP code serves a distinct delivery area within the city and surrounding region.
Need the complete Connecticut ZIP code database? Download all CT ZIP codes — Excel, CSV, or Access. Includes lat/lng, county FIPS & timezone.
Download database →