06455 ZIP Code — Middlefield, CT

Middlesex County, Connecticut

ZIP code 06455 is located in Middlefield, Connecticut, within Middlesex County. It covers approximately 10.74 square miles and serves a population of 2,834 residents. This is a standard ZIP code in the Eastern (ET) timezone, served by area code 860.

About ZIP code 06455

The housing stock consists of predominantly single-family detached homes. Most homes were built in the pre-1940, giving the area an established character. Median home value is $364,700. Owner-occupancy is high at 92%, well above the national average.

The gap between median ($102,292) 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.

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 near the national average, with 41% of residents holding a bachelor's degree or higher.

2,834

population

10.74

sq mi land

Standard

ZIP type

Eastern (ET)

timezone

06455 ZIP code map

Cities in ZIP code 06455

Below are the cities the US Postal Service accepts for ZIP code 06455. Using any city not on this list may result in mail delivery delays.

City	Status
Middlefield	Preferred

Nearby ZIP codes

06481 Rockfall (1.5 mi) 06450 Meriden (3.7 mi) 06457 Middletown (3.9 mi) 06459 Middletown (4.1 mi) 06422 Durham (4.2 mi) 06451 Meriden (5.7 mi) 06495 Wallingford (6.1 mi) 06492 Wallingford (6.5 mi) 06416 Cromwell (6.7 mi) 06037 Berlin (6.9 mi) 06493 Wallingford (6.9 mi) 06023 East Berlin (6.9 mi)

Demographics updated 05/2026

Population
Total population	2,834
Population density	264 / sq mi
State FIPS	09
County FIPS	007

Geography
Land area	10.74 sq mi
Water area	0.59 sq mi
Latitude	41.5157
Longitude	-72.7131
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	20.2%	28.8%	32.0%
$50k – $100k	31.8%	28.9%	27.7%
$100k – $200k	36.8%	30.3%	27.1%
Over $200k	11.3%	12.1%	13.2%

Demographics & statistics

2,834

Population

264

People per sq mi

51.7

Median age

$102,292

Median household income

$61,100

Per capita income

$364,700

Median home value

$1,208

Median monthly rent

92.2%

Home ownership

3.6%

Poverty rate

2.7%

Unemployment

1,268

Housing units

41.4%

Bachelor's or higher

Age distribution

Male Female

Under 5

5–9

108

10–14

15–19

20–24

165

25–34

139

132

35–44

111

300

45–54

251

154

55–59

130

171

60–64

143

205

65–74

171

75–84

85+

← Male

Female →

Age summary

Group	Count	%
Under 18	435	15.3%
18 and over	2,399	84.7%
65 and over	577	20.4%
Median age	51.7 years

Race & ethnicity

White 87.8%

Asian 4.9%

Two or more races 3.1%

Hispanic or Latino 3%

Other race 0.9%

Black or African American 0.4%

Group	Count	%
White	2,564	87.8%
Asian	143	4.9%
Two or more races	90	3.1%
Hispanic or Latino	87	3%
Other race	25	0.9%
Black or African American	12	0.4%

Household income

Income range	This ZIP	County avg	State avg
Under $50k	20.2%	28.8%	32.0%
$50k – $100k	31.8%	28.9%	27.7%
$100k – $200k	36.8%	30.3%	27.1%
Over $200k	11.3%	12.1%	13.2%

Under $10k 2.0%

$10k–$15k 2.9%

$15k–$25k 3.0%

$25k–$35k 5.7%

$35k–$50k 1.3%

$50k–$75k 16.4%

$75k–$100k 16.9%

$100k–$150k 18.3%

$150k–$200k 16.7%

$200k+ 16.8%

Range	% of households
Under $10k	2.0%
$10k–$15k	2.9%
$15k–$25k	3.0%
$25k–$35k	5.7%
$35k–$50k	1.3%
$50k–$75k	16.4%
$75k–$100k	16.9%
$100k–$150k	18.3%
$150k–$200k	16.7%
$200k+	16.8%
Median income	$102,292

Housing

Home values

Under $50k 0.7%

$50k–$100k 0.8%

$100k–$150k 0.6%

$150k–$200k 6.8%

$200k–$300k 24.4%

$300k–$500k 51.4%

$500k–$1M 15.3%

Housing overview

Metric	Value
Median home value	$364,700
Median rent / month	$1,208
Owner occupied	92.2%
Renter occupied	7.8%
Vacant	9.0%
Single-family detached	89.9%
Large apartment buildings	0.0%
Mobile homes	0.7%
Median rooms	6.1
Avg household size (owned)	2.23

Year built

Era	%
2020 or later	0.0%
2010–2019	4.5%
2000–2009	4.5%
1990–1999	15.2%
1980–1989	13.4%
1970–1979	9.9%
1960–1969	10.6%
1950–1959	15.0%
1940–1949	6.6%
1939 or earlier	20.3%

Bedrooms

Size	% of units
No bedroom (studio)	0.0%
1 bedroom	3.7%
2 bedrooms	20.7%
3 bedrooms	59.8%
4 bedrooms	13.8%
5+ bedrooms	1.9%

Vehicles per household

Vehicles	% of households
No vehicle	2.5%
1 vehicle	18.7%
2 vehicles	40.3%
3 or more	38.6%

Heating fuel

Fuel type	%
Utility gas	2.1%
Electricity	8.6%
Propane / LP gas	14.6%
Fuel oil	65.5%
Wood	6.8%
No fuel used	0.6%

Households & families

Household type	Count	%
Married-couple family	637	51.3%
Cohabiting couple	46	3.7%
Male householder, no spouse	256	20.6%
Female householder, no spouse	303	24.4%
Households with children under 18	265	21.3%
Households with seniors (65+)	411	33.1%
Average household size	2.27

Marital status

Status	Male	Female
Never married	22.1%	18.6%
Married	58.0%	58.1%
Separated	2.3%	0.0%
Widowed	8.6%	8.3%
Divorced	9.0%	15.0%

Education

Less than 9th grade 1.6%

Some HS, no diploma 3.0%

HS graduate 29.7%

Some college, no degree 14.3%

Associate's degree 10.0%

Bachelor's degree 20.4%

Graduate / professional 21.0%

Metric	%
HS diploma or higher	95.4%
Bachelor's or higher	41.4%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	29	6.5%
Kindergarten	0	0.0%
Elementary school	218	49.1%
High school	112	25.2%
College / grad school	85	19.1%

Employment

Industry of employment

Education & healthcare 34.1%

Construction 12.2%

Professional & management 10.9%

Manufacturing 8.8%

Retail trade 7.4%

Finance & real estate 6.8%

Transportation & utilities 6.1%

Wholesale trade 4.3%

Arts, food & hospitality 3.6%

Other services 3.5%

Public administration 1.5%

Information 0.6%

Occupation

Category	%
Management, business & arts	45.2%
Service	6.6%
Sales & office	22.4%
Natural resources & construction	13.7%
Production & transportation	12.1%

Employment type

Type	%
Private sector	76.3%
Government	15.3%
Self-employed	8.3%
Unpaid family workers	0.0%

Commute

Method	%
Drive alone	84.2%
Carpool	4.4%
Public transit	2.2%
Walk	0.6%
Work from home	7.8%
Other means	0.8%
Avg commute (minutes)	24.8

Poverty

All people 3.6%

Under 18 years 4.1%

18 and over 3.5%

Married-couple families 0.0%

Female-led households 5.3%

Income support

Source	% of households
Social Security	29.9%
Retirement income	27.9%
Supplemental Security	3.0%
Cash public assistance	2.7%
Food stamps / SNAP	1.4%

Health indicators

Condition	%
Obesity	29.9%
High blood pressure	31.7%
High cholesterol	33.6%
Diabetes	8.7%
Heart disease	6.1%
Stroke	2.6%
Asthma	10.0%
Arthritis	25.9%
Kidney disease	2.6%
Pulmonary disease	6.2%
Cancer	7.6%

Behavior / access	%
Smoking	15.8%
Binge drinking	17.6%
No physical activity	16.9%
Less than 7 hrs sleep	30.4%
Depression	20.3%
Fair or poor health	10.0%
Poor mental health	13.3%
Poor physical health	8.6%
No health insurance	7.3%
Visited doctor (checkup)	77.8%
Visited dentist	74.2%
Cholesterol screening	93.2%
Teeth loss	9.6%

Veterans & disability

Veterans	Count	%
Civilian veterans	241	10.1%

Disability	%
Any disability	10.0%
Under 18	2.1%
18–64 years	9.1%
65 and over	18.7%

Health insurance coverage

Type	%
Private insurance	77.5%
Public insurance	34.7%
No insurance	4.0%
Uninsured under 19	2.5%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	2,729	96.3%
Spanish	51	1.9%
Other Indo-European	35	1.3%
Asian & Pacific Islander	16	0.6%
Other languages	0	0.0%

Place of birth & citizenship

Origin	Count	%
Native born (US)	2,671	94.2%
Born in same state	2,671	94.2%
Born in different state	1,988	70.1%
Foreign born	0	0.0%
Naturalized citizen	163	5.8%
Not a US citizen	101	62.0%

Ancestry

Ancestry	Count	%
Italian	538	19%
French	429	15.1%
Arab	152	5.4%
German	59	2.1%

Ancestry	Count	%
Polish	33	1.2%
English	26	0.9%
Norwegian	25	0.9%
Dutch	6	0.2%

Technology access

Metric	% of households
Computer access	43.8%
Internet access	96.1%

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

Frequently asked questions about ZIP code 06455

What city is ZIP code 06455 in?

ZIP code 06455 is primarily assigned to Middlefield, Connecticut.

What county is ZIP code 06455 in?

ZIP code 06455 falls within Middlesex County, Connecticut.

Is ZIP code 06455 mostly owner-occupied?

92% of occupied units in ZIP code 06455 are owner-occupied, well above the national average.

What is the typical home value in ZIP code 06455?

The median home value in ZIP code 06455 is $364,700.

Does ZIP code 06455 have a large veteran population?

10% of civilians in ZIP code 06455 are veterans, above the national average of ~7%.

What is the population of ZIP code 06455?

ZIP code 06455 has an estimated population of 2,834 residents, with a density of 264 people per square mile.

What timezone is ZIP code 06455 in?

ZIP code 06455 observes the EST timezone.