Connecticut is home to 295 ZIP codes, all beginning with the prefix '06', spanning 8 counties and 208 cities across the Constitution State. From the bustling urban centers of Hartford, Bridgeport, and New Haven to the charming rural towns of Litchfield County, Connecticut's ZIP codes range from 06001 to 06927 and cover every corner of this compact New England state. Hartford County holds the most ZIP codes at 69, followed by Fairfield County with 53 and New Haven County with 50, reflecting the population density of these major metropolitan areas. Whether you're looking up a ZIP code for shipping, real estate research, or demographic analysis, ZipCodesToGo.com provides a complete reference for every Connecticut ZIP code.
All Connecticut ZIP codes begin with the prefix 06, making it one of the few states where every ZIP code shares the same two-digit start. The prefixes range from 060 through 069, generally progressing from the north-central part of the state around Hartford southward and westward through New Haven and Fairfield counties toward the New York border. This compact prefix range reflects Connecticut's small geographic size as one of the smallest states in the nation.
Hartford County leads Connecticut with 69 ZIP codes, which reflects its status as the most populous county in the state and home to the capital city of Hartford, along with numerous suburban and rural communities spread across a relatively large geographic area.
Quick facts
Connecticut is one of only a handful of states where every single ZIP code shares the same first two digits — all 295 ZIP codes begin with '06', a testament to the state's compact size.
The first two digits '06' were assigned to Connecticut when the ZIP code system was introduced in 1963, and Connecticut was among the earliest states to fully adopt the system due to its dense postal infrastructure in the Northeast corridor.
Despite being the third-smallest state by area, Connecticut still has 295 ZIP codes spread across just 8 counties, giving it one of the highest ZIP-code-per-square-mile ratios in the country.
Frequently asked questions
What ZIP codes are in Hartford, Connecticut?
Hartford, the state capital, uses several ZIP codes including 06101, 06102, 06103, 06104, 06105, 06106, 06112, 06114, 06115, and 06120, among others. Some of these are delivery ZIP codes covering specific neighborhoods, while others are used for PO boxes and government offices in the downtown area.
How many ZIP codes does Connecticut have?
Connecticut has a total of 295 ZIP codes, spanning from 06001 to 06927. These ZIP codes cover all 8 counties and 208 cities and towns across the state, including standard delivery ZIP codes as well as PO Box and unique-use codes.
What do Connecticut ZIP codes start with?
Every ZIP code in Connecticut starts with '06'. The three-digit prefixes used range from 060 through 069, covering all regions of the state. This uniform two-digit start is due to Connecticut's small size, which allowed it to fit entirely within a single sectional center range when the ZIP code system was established in 1963.
Which county in Connecticut has the most ZIP codes?
Hartford County has the most ZIP codes in Connecticut with 69, followed by Fairfield County with 53 and New Haven County with 50. Together, these three counties account for more than half of all ZIP codes in the state, reflecting their larger populations and greater number of distinct communities.
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Last updated April 2026
Demographics & statistics
3,595,991
Population
41.3
Median age
$100,083
Median household income
$52,184
Per capita income
$386,717
Median home value
$1,401
Median monthly rent
73.1%
Home ownership
8.7%
Poverty rate
5.3%
Unemployment
1,032,651
Housing units
42.9%
Bachelor's or higher
Age distribution
MaleFemale
90,514
Under 5
91,900
97,463
5–9
98,957
110,142
10–14
111,830
120,060
15–19
121,900
117,471
20–24
119,270
222,527
25–34
225,937
220,424
35–44
223,801
235,301
45–54
238,906
131,896
55–59
133,917
126,824
60–64
128,768
179,503
65–74
182,253
88,578
75–84
89,936
43,622
85+
44,291
← Male
Female →
Age summary
Group
Count
%
Under 18
741,805
19.8%
18 and over
2,854,186
80.2%
65 and over
628,183
19.4%
Median age
41.3 years
Race & ethnicity
White62.7%
Hispanic or Latino10.2%
Black or African American9.6%
Two or more races7.2%
Other race5.8%
Asian4.2%
American Indian / Alaska Native0.2%
Group
Count
%
White
2,511,294
62.7%
Hispanic or Latino
408,344
10.2%
Black or African American
384,132
9.6%
Two or more races
287,646
7.2%
Other race
233,186
5.8%
Asian
169,396
4.2%
American Indian / Alaska Native
8,992
0.2%
Household income
Under $10k3.9%
$10k–$15k2.7%
$15k–$25k5.1%
$25k–$35k5.4%
$35k–$50k8.0%
$50k–$75k13.5%
$75k–$100k12.4%
$100k–$150k18.5%
$150k–$200k11.4%
$200k+19.1%
Range
% of households
Under $10k
3.9%
$10k–$15k
2.7%
$15k–$25k
5.1%
$25k–$35k
5.4%
$35k–$50k
8.0%
$50k–$75k
13.5%
$75k–$100k
12.4%
$100k–$150k
18.5%
$150k–$200k
11.4%
$200k+
19.1%
Median income
$100,083
Housing
Home values
Under $50k2.7%
$50k–$100k1.9%
$100k–$150k4.8%
$150k–$200k9.9%
$200k–$300k25.3%
$300k–$500k33.4%
$500k–$1M16.0%
$1M+6.0%
Housing overview
Metric
Value
Median home value
$386,717
Median rent / month
$1,401
Owner occupied
73.1%
Renter occupied
26.9%
Vacant
9.4%
Single-family detached
69.3%
Large apartment buildings
6.3%
Mobile homes
1.3%
Median rooms
6.1
Avg household size (owned)
2.58
Year built
Era
%
2020 or later
0.2%
2010–2019
3.8%
2000–2009
8.3%
1990–1999
9.4%
1980–1989
12.9%
1970–1979
14.0%
1960–1969
11.8%
1950–1959
13.1%
1940–1949
5.7%
1939 or earlier
20.8%
Bedrooms
Size
% of units
No bedroom (studio)
1.9%
1 bedroom
10.4%
2 bedrooms
23.6%
3 bedrooms
39.6%
4 bedrooms
19.1%
5+ bedrooms
5.4%
Vehicles per household
Vehicles
% of households
No vehicle
6.7%
1 vehicle
29.5%
2 vehicles
39.4%
3 or more
24.4%
Heating fuel
Fuel type
%
Utility gas
23.8%
Electricity
15.0%
Propane / LP gas
7.1%
Fuel oil
49.2%
Wood
3.3%
Solar
0.2%
No fuel used
0.4%
Households & families
Household type
Count
%
Married-couple family
666,778
51.8%
Cohabiting couple
96,873
7.1%
Male householder, no spouse
244,764
16.4%
Female householder, no spouse
399,570
24.7%
Households with children under 18
409,639
28.6%
Households with seniors (65+)
450,638
34.2%
Average household size
2.48
Marital status
Status
Male
Female
Never married
34.2%
28.4%
Married
53.5%
49.9%
Separated
0.9%
1.2%
Widowed
2.5%
8.1%
Divorced
9.0%
12.0%
Education
Less than 9th grade3.0%
Some HS, no diploma4.1%
HS graduate26.0%
Some college, no degree16.2%
Associate's degree7.9%
Bachelor's degree23.7%
Graduate / professional19.2%
Metric
%
HS diploma or higher
93.0%
Bachelor's or higher
42.9%
School enrollment (ages 3–17)
Type
Count
%
Nursery / preschool
51,239
5.9%
Kindergarten
39,976
4.6%
Elementary school
333,696
38.6%
High school
193,732
23.5%
College / grad school
262,013
26.3%
Employment
Industry of employment
Education & healthcare25.7%
Professional & management11.8%
Manufacturing11.2%
Retail trade10.3%
Finance & real estate9.0%
Arts, food & hospitality7.8%
Construction6.7%
Other services4.3%
Transportation & utilities4.2%
Public administration3.6%
Wholesale trade2.3%
Information1.9%
Agriculture & mining0.9%
Occupation
Category
%
Management, business & arts
46.7%
Service
15.1%
Sales & office
19.8%
Natural resources & construction
7.8%
Production & transportation
10.3%
Employment type
Type
%
Private sector
79.1%
Government
13.3%
Self-employed
7.1%
Unpaid family workers
0.2%
Commute
Method
%
Drive alone
72.6%
Carpool
6.8%
Public transit
2.9%
Walk
2.6%
Other means
1.2%
Avg commute (minutes)
26.9
Poverty
All people8.7%
Under 18 years10.7%
18 and over8.1%
Married-couple families3.0%
Female-led households15.0%
Income support
Source
% of households
Social Security
33.5%
Retirement income
26.3%
Supplemental Security
3.9%
Cash public assistance
2.6%
Food stamps / SNAP
9.0%
Health indicators
Condition
%
High blood pressure
29.7%
High cholesterol
32.7%
Heart disease
5.8%
Stroke
2.6%
Asthma
10.3%
Arthritis
23.7%
Kidney disease
2.6%
Pulmonary disease
5.7%
Cancer
7.0%
Behavior / access
%
Binge drinking
16.3%
No physical activity
18.9%
Less than 7 hrs sleep
32.6%
Fair or poor health
11.0%
Poor mental health
13.5%
Poor physical health
8.8%
No health insurance
8.9%
Visited doctor (checkup)
76.4%
Visited dentist
72.2%
Cholesterol screening
91.9%
Teeth loss
9.4%
Veterans & disability
Veterans
Count
%
Civilian veterans
145,772
6.0%
Disability
%
Any disability
11.6%
Under 18
4.0%
18–64 years
9.1%
65 and over
27.7%
Health insurance coverage
Type
%
Private insurance
73.1%
Public insurance
35.6%
Uninsured under 19
2.5%
Language & origin
Language spoken at home (age 5+)
Language
Count
%
English only
3,413,577
95.4%
Spanish
288,194
5.8%
Other Indo-European
168,867
3.4%
Asian & Pacific Islander
77,213
1.5%
Other languages
33,252
0.7%
Place of birth & citizenship
Origin
Count
%
Native born (US)
3,054,675
88.6%
Born in same state
2,916,847
85.7%
Born in different state
1,939,229
55.3%
Foreign born
137,828
2.9%
Naturalized citizen
541,316
11.4%
Not a US citizen
297,581
59.5%
Ancestry
Ancestry
Count
%
Italian
518,420
14.4%
French
308,717
8.6%
Arab
129,487
3.6%
German
80,384
2.2%
Irish
31,643
0.9%
Ancestry
Count
%
Norwegian
25,525
0.7%
English
23,003
0.6%
Polish
17,123
0.5%
Dutch
9,679
0.3%
Technology access
Metric
% of households
Computer access
40.2%
Internet access
94.5%
Source: U.S. Census Bureau, American Community Survey 2025 estimates.
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