06419 ZIP Code — Killingworth, CT

Middlesex County, Connecticut

ZIP code 06419 is located in Killingworth, Connecticut, within Middlesex County. It covers approximately 35.33 square miles and serves a population of 6,216 residents. This is a standard ZIP code in the Eastern (ET) timezone, served by area code 860.

About ZIP code 06419

The housing stock consists of predominantly single-family detached homes. Most homes were built in the 1990s, giving the area an established character. Median home value is $377,600. Owner-occupancy is high at 98%, well above the national average.

The gap between median ($124,620) and mean household income suggests income inequality — a small number of higher earners pull the average up. The poverty rate of 4% is below the national average. 38% of households receive Social Security income, suggesting a notable retiree or disability population.

The dominant occupation class is management, business, and professional, with education and healthcare as the leading industry. The average commute of 25 minutes is near the national average.

Educational attainment is high — 52% of residents hold a bachelor's degree or higher, well above the national average of 33%.

Overall, ZIP code 06419 reflects a community defined by a highly educated population, high homeownership, and a significant Social Security-dependent population.

6,216

population

35.33

sq mi land

Standard

ZIP type

Eastern (ET)

timezone

06419 ZIP code map

Cities in ZIP code 06419

Below are the cities the US Postal Service accepts for ZIP code 06419. Using any city not on this list may result in mail delivery delays.

City	Status
Killingworth	Acceptable
Killingworth	Preferred

Nearby ZIP codes

06443 Madison (2.4 mi) 06412 Chester (5.5 mi) 06413 Clinton (5.6 mi) 06437 Guilford (6.2 mi) 06441 Higganum (6.2 mi) 06417 Deep River (6.6 mi) 06442 Ivoryton (7.1 mi) 06438 Haddam (7.2 mi) 06498 Westbrook (7.4 mi) 06422 Durham (7.9 mi) 06409 Centerbrook (8.8 mi) 06426 Essex (9.4 mi)

Demographics updated 05/2026

Population
Total population	6,216
Population density	176 / sq mi
State FIPS	09
County FIPS	007

Geography
Land area	35.33 sq mi
Water area	0.45 sq mi
Latitude	41.3732
Longitude	-72.5797
Timezone	Eastern (ET)
Area code	860

Total population by age

Gender

Race & ethnicity

Economics updated 05/2026

Household income

Income range	This ZIP	County avg	State avg
Under $50k	21.6%	28.8%	32.0%
$50k – $100k	23.9%	28.9%	27.7%
$100k – $200k	34.4%	30.3%	27.1%
Over $200k	20.1%	12.1%	13.2%

Demographics & statistics

6,216

Population

176

People per sq mi

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

85+

← Male

Female →

Age summary

Group	Count	%
Under 18	1,139	18.3%
18 and over	5,077	81.7%
65 and over	1,354	21.8%
Median age	51.3 years

Race & ethnicity

White 86.7%

Two or more races 5.9%

Hispanic or Latino 5.2%

Asian 1.6%

Other race 0.6%

Group	Count	%
White	5,687	86.7%
Two or more races	386	5.9%
Hispanic or Latino	343	5.2%
Asian	104	1.6%
Other race	39	0.6%

Household income

Income range	This ZIP	County avg	State avg
Under $50k	21.6%	28.8%	32.0%
$50k – $100k	23.9%	28.9%	27.7%
$100k – $200k	34.4%	30.3%	27.1%
Over $200k	20.1%	12.1%	13.2%

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 $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%
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

Metric	Value
Median home value	$377,600
Median rent / month	$898
Owner occupied	97.6%
Renter occupied	2.4%
Vacant	10.2%
Single-family detached	92.8%
Large apartment buildings	0.0%
Mobile homes	6.0%
Median rooms	7.1
Avg household size (owned)	2.69

Year built

Era	%
2020 or later	0.0%
2010–2019	8.0%
2000–2009	9.5%
1990–1999	19.9%
1980–1989	15.6%
1970–1979	17.0%
1960–1969	8.3%
1950–1959	10.7%
1940–1949	5.0%
1939 or earlier	6.0%

Bedrooms

Size	% of units
No bedroom (studio)	0.0%
1 bedroom	2.0%
2 bedrooms	22.6%
3 bedrooms	41.2%
4 bedrooms	23.4%
5+ bedrooms	10.9%

Vehicles per household

Vehicles	% of households
No vehicle	1.8%
1 vehicle	18.7%
2 vehicles	34.6%
3 or more	44.9%

Heating fuel

Fuel type	%
Utility gas	2.7%
Electricity	2.4%
Propane / LP gas	23.0%
Fuel oil	64.0%
Wood	4.3%
Solar	0.4%

Households & families

Household type	Count	%
Married-couple family	1,711	73.3%
Cohabiting couple	98	4.2%
Male householder, no spouse	193	8.3%
Female householder, no spouse	333	14.3%
Households with children under 18	619	26.5%
Households with seniors (65+)	979	41.9%
Average household size	2.66

Marital status

Status	Male	Female
Never married	29.1%	15.1%
Married	65.1%	67.6%
Separated	0.0%	0.0%
Widowed	0.0%	12.3%
Divorced	5.8%	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 higher	98.6%
Bachelor's or higher	52.4%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	64	5.8%
Kindergarten	91	8.2%
Elementary school	481	43.3%
High school	307	27.6%
College / grad school	168	15.1%

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 & arts	56.2%
Service	8.7%
Sales & office	16.0%
Natural resources & construction	10.2%
Production & transportation	9.0%

Employment type

Type	%
Private sector	72.5%
Government	16.1%
Self-employed	11.5%
Unpaid family workers	0.0%

Commute

Method	%
Drive alone	76.4%
Carpool	5.9%
Public transit	0.3%
Walk	0.9%
Work from home	15.1%
Other means	1.4%
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 Security	37.8%
Retirement income	31.9%
Supplemental Security	3.9%
Cash public assistance	5.8%
Food stamps / SNAP	1.2%

Health indicators

Condition	%
Obesity	28.5%
High blood pressure	31.2%
High cholesterol	34.3%
Diabetes	8.3%
Heart disease	5.7%
Stroke	2.4%
Asthma	9.6%
Arthritis	25.7%
Kidney disease	2.5%
Pulmonary disease	5.3%
Cancer	8.0%

Behavior / access	%
Smoking	12.7%
Binge drinking	16.7%
No physical activity	14.4%
Less than 7 hrs sleep	28.8%
Depression	19.4%
Fair or poor health	8.5%
Poor mental health	12.1%
Poor physical health	7.7%
No health insurance	5.8%
Visited doctor (checkup)	78.9%
Visited dentist	78.4%
Cholesterol screening	94.6%
Teeth loss	6.9%

Veterans & disability

Veterans	Count	%
Civilian veterans	199	3.9%

Disability	%
Any disability	9.4%
Under 18	0.0%
18–64 years	5.7%
65 and over	27.3%

Health insurance coverage

Type	%
Private insurance	86.3%
Public insurance	24.5%
No insurance	3.0%
Uninsured under 19	0.0%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	5,910	95.1%
Spanish	36	0.6%
Other Indo-European	14	0.2%
Asian & Pacific Islander	22	0.4%
Other languages	0	0.0%

Place of birth & citizenship

Origin	Count	%
Native born (US)	6,107	98.2%
Born in same state	6,061	97.5%
Born in different state	4,472	71.9%
Foreign born	46	0.7%
Naturalized citizen	109	1.8%
Not a US citizen	109	100.0%

Ancestry

Ancestry	Count	%
Italian	1,620	26.1%
French	666	10.7%
Norwegian	266	4.3%
Arab	121	1.9%
German	81	1.3%

Ancestry	Count	%
Irish	65	1%
English	64	1%
Dutch	37	0.6%
Polish	19	0.3%

Technology access

Metric	% of households
Computer access	37.6%
Internet access	93.7%

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

Frequently asked questions about ZIP code 06419

What city is ZIP code 06419 in?

ZIP code 06419 is primarily assigned to Killingworth, Connecticut.

What county is ZIP code 06419 in?

ZIP code 06419 falls within Middlesex County, Connecticut.

Is ZIP code 06419 mostly owner-occupied?

98% of occupied units in ZIP code 06419 are owner-occupied, well above the national average.

How educated is the population of ZIP code 06419?

52% of residents hold a bachelor's degree or higher — well above the national average of ~33%, reflecting a highly educated population.

Does ZIP code 06419 have a large retiree population?

38% of households in ZIP code 06419 receive Social Security income, suggesting a significant retiree or disability population.

What is the median household income in ZIP code 06419?

The median household income in ZIP code 06419 is $124,620, above the national median of ~$75,000.

What timezone is ZIP code 06419 in?

ZIP code 06419 observes the EST timezone.