Middlesex County, CT ZIP Codes

Connecticut (CT)  ·  23 ZIP codes  ·  22 cities
23
ZIP codes
164,759
population (2021)
-0.6%
pop change since 2010
09007
FIPS code
Middlesex County ZIP code map
About Middlesex County
Middlesex County is located in Connecticut and contains 23 ZIP codes across 22 cities and communities. The county's population was 164,759 as of 2021, a decrease of 0.6% from 165,676 in 2010. The timezone is Central Time (observes DST). The Federal Information Processing System (FIPS) code for Middlesex County is 09007.
Population
2021 population164,759
2010 population165,676
Change-0.6%
County details
StateConnecticut
FIPS code09007
TimezoneCentral
Daylight savingYes
Cities in Middlesex County
Centerbrook Chester Clinton Cobalt Cromwell Deep River Durham East Haddam East Hampton Essex Haddam Higganum Ivoryton Killingworth Middle Haddam Middlefield Middletown Moodus Old Saybrook Portland Rockfall Westbrook
ZIP codes for Middlesex County, CT (23)
ZIP code City County Map
06409 Centerbrook Middlesex View map
06412 Chester Middlesex View map
06413 Clinton Middlesex View map
06414 Cobalt Middlesex View map
06416 Cromwell Middlesex View map
06417 Deep River Middlesex View map
06419 Killingworth Middlesex View map
06422 Durham Middlesex View map
06423 East Haddam Middlesex View map
06424 East Hampton Middlesex View map
06426 Essex Middlesex View map
06438 Haddam Middlesex View map
06441 Higganum Middlesex View map
06442 Ivoryton Middlesex View map
06455 Middlefield Middlesex View map
06456 Middle Haddam Middlesex View map
06457 Middletown Middlesex View map
06459 Middletown Middlesex View map
06469 Moodus Middlesex View map
06475 Old Saybrook Middlesex View map
06480 Portland Middlesex View map
06481 Rockfall Middlesex View map
06498 Westbrook Middlesex View map

Demographics & statistics

162,822
Population
45.0
Median age
$98,720
Median household income
$53,449
Per capita income
$364,675
Median home value
$1,449
Median monthly rent
79.9%
Home ownership
5.4%
Poverty rate
3.6%
Unemployment
58,394
Housing units
45.7%
Bachelor's or higher

Age distribution

Male Female
3,284
Under 5
3,369
3,589
5–9
3,683
4,158
10–14
4,267
4,885
15–19
5,012
4,979
20–24
5,110
9,476
25–34
9,724
9,433
35–44
9,679
10,790
45–54
11,072
6,654
55–59
6,828
6,512
60–64
6,683
9,544
65–74
9,793
4,814
75–84
4,939
2,243
85+
2,302
← Male
Female →

Age summary

GroupCount%
Under 1828,10317.9%
18 and over134,71982.1%
65 and over33,63522.4%
Median age45.0 years

Race & ethnicity

White 79.6%
Two or more races 6%
Black or African American 5%
Hispanic or Latino 4.8%
Asian 3.3%
Other race 1.1%
American Indian / Alaska Native 0.2%
GroupCount%
White136,03879.6%
Two or more races10,3116%
Black or African American8,5385%
Hispanic or Latino8,1714.8%
Asian5,7013.3%
Other race1,8681.1%
American Indian / Alaska Native3580.2%

Household income

Under $10k 2.7%
$10k–$15k 1.7%
$15k–$25k 4.4%
$25k–$35k 6.7%
$35k–$50k 6.4%
$50k–$75k 12.1%
$75k–$100k 13.5%
$100k–$150k 20.5%
$150k–$200k 13.6%
$200k+ 18.5%
Range% of households
Under $10k2.7%
$10k–$15k1.7%
$15k–$25k4.4%
$25k–$35k6.7%
$35k–$50k6.4%
$50k–$75k12.1%
$75k–$100k13.5%
$100k–$150k20.5%
$150k–$200k13.6%
$200k+18.5%
Median income$98,720

Housing

Home values

Under $50k 2.0%
$50k–$100k 1.3%
$100k–$150k 2.6%
$150k–$200k 4.9%
$200k–$300k 24.7%
$300k–$500k 45.4%
$500k–$1M 16.3%
$1M+ 2.9%

Housing overview

MetricValue
Median home value$364,675
Median rent / month$1,449
Owner occupied79.9%
Renter occupied20.1%
Vacant9.5%
Single-family detached80.4%
Large apartment buildings2.7%
Mobile homes1.0%
Median rooms6.1
Avg household size (owned)2.47

Year built

Era%
2020 or later0.1%
2010–20193.9%
2000–20099.1%
1990–199910.2%
1980–198914.4%
1970–197914.4%
1960–196910.5%
1950–195911.5%
1940–19494.3%
1939 or earlier21.7%

Bedrooms

Size% of units
No bedroom (studio)1.1%
1 bedroom9.0%
2 bedrooms22.4%
3 bedrooms45.3%
4 bedrooms18.0%
5+ bedrooms4.1%

Vehicles per household

Vehicles% of households
No vehicle3.7%
1 vehicle27.0%
2 vehicles41.5%
3 or more27.7%

Heating fuel

Fuel type%
Utility gas7.6%
Electricity15.2%
Propane / LP gas9.3%
Fuel oil62.2%
Wood3.7%
Solar0.3%
No fuel used0.5%

Households & families

Household typeCount%
Married-couple family34,42954.0%
Cohabiting couple4,6246.8%
Male householder, no spouse11,98715.3%
Female householder, no spouse17,46824.0%
Households with children under 1817,28626.0%
Households with seniors (65+)23,06336.8%
Average household size2.36

Marital status

StatusMaleFemale
Never married28.7%23.0%
Married57.5%53.1%
Separated0.7%0.6%
Widowed3.3%8.5%
Divorced9.8%14.8%

Education

Less than 9th grade 1.7%
Some HS, no diploma 2.5%
HS graduate 24.6%
Some college, no degree 16.6%
Associate's degree 8.9%
Bachelor's degree 25.7%
Graduate / professional 20.1%
Metric%
HS diploma or higher95.8%
Bachelor's or higher45.7%

School enrollment (ages 3–17)

TypeCount%
Nursery / preschool2,2536.1%
Kindergarten1,3074.4%
Elementary school12,78937.4%
High school7,73624.7%
College / grad school12,81227.5%

Employment

Industry of employment

Education & healthcare 26.5%
Manufacturing 12.2%
Professional & management 11.5%
Retail trade 9.4%
Finance & real estate 8.5%
Arts, food & hospitality 7.9%
Construction 7.4%
Transportation & utilities 4.2%
Public administration 3.9%
Other services 3.7%
Wholesale trade 2.8%
Information 1.6%
Agriculture & mining 0.4%

Occupation

Category%
Management, business & arts48.8%
Service13.2%
Sales & office19.9%
Natural resources & construction8.2%
Production & transportation10.0%

Employment type

Type%
Private sector78.7%
Government14.1%
Self-employed7.1%
Unpaid family workers0.2%

Commute

Method%
Drive alone76.4%
Carpool6.2%
Public transit1.0%
Walk1.9%
Other means0.8%
Avg commute (minutes)26.7

Poverty

All people 5.4%
Under 18 years 5.1%
18 and over 5.4%
Married-couple families 1.0%
Female-led households 9.9%

Income support

Source% of households
Social Security34.6%
Retirement income27.9%
Supplemental Security2.7%
Cash public assistance2.2%
Food stamps / SNAP6.3%

Health indicators

Condition%
High blood pressure31.2%
High cholesterol33.2%
Heart disease6.0%
Stroke2.6%
Asthma9.9%
Arthritis25.7%
Kidney disease2.6%
Pulmonary disease5.8%
Cancer7.8%
Behavior / access%
Binge drinking17.2%
No physical activity16.1%
Less than 7 hrs sleep29.7%
Fair or poor health9.6%
Poor mental health13.0%
Poor physical health8.3%
No health insurance7.0%
Visited doctor (checkup)78.1%
Visited dentist75.3%
Cholesterol screening93.3%
Teeth loss8.7%

Veterans & disability

VeteransCount%
Civilian veterans8,5176.5%
Disability%
Any disability10.9%
Under 182.8%
18–64 years8.5%
65 and over24.4%

Health insurance coverage

Type%
Private insurance75.7%
Public insurance34.3%
Uninsured under 191.6%

Language & origin

Language spoken at home (age 5+)

LanguageCount%
English only156,16996.2%
Spanish5,4322.6%
Other Indo-European2,1921.1%
Asian & Pacific Islander1,8970.9%
Other languages1,2080.6%

Place of birth & citizenship

OriginCount%
Native born (US)149,76793.2%
Born in same state147,71292.4%
Born in different state104,56765.8%
Foreign born2,0550.8%
Naturalized citizen13,0556.8%
Not a US citizen8,45763.3%

Ancestry

AncestryCount%
Italian31,96419.6%
French19,22311.8%
Arab6,3743.9%
German4,3462.7%
English1,9921.2%
AncestryCount%
Norwegian1,4270.9%
Irish1,2850.8%
Polish8850.5%
Dutch7160.4%

Technology access

Metric% of households
Computer access42.1%
Internet access95.3%

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

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