Old Greenwich ZIP Codes — Fairfield County, CT

There is one unique ZIP code in Old Greenwich, Connecticut and it is 06870. Area code: 203/475.
1
ZIP codes
2.27
sq mi land
1.48
sq mi water
203/475
area code
Old Greenwich, CT ZIP code map

About Old Greenwich, CT

Old Greenwich, Connecticut, is a picturesque coastal community known for its charm and affluent lifestyle. Nestled within Fairfield County, this small town features serene neighborhoods and a strong sense of community. The town boasts a rich history and beautiful waterfront views that attract visitors and residents alike.

Location & geography

Old Greenwich is located along the southeastern coast of Connecticut, bordered by the Long Island Sound. Nearby cities include Greenwich, located just 4 miles to the northwest, Stamford, approximately 6 miles to the west, and Port Chester, New York, about 5 miles to the southwest. The town encompasses a total land area of 2.27 square miles, complemented by an impressive water area of 1.48 square miles, creating a beautiful landscape of beaches and parks.

Community & economy

The character of Old Greenwich is predominantly residential, featuring quiet streets and family-friendly neighborhoods. The community is supported by a mix of local businesses and services, alongside the affluent residents who contribute to its economy, primarily driven by finance, real estate, and tourism. Daily life in Old Greenwich is enhanced by its recreational offerings, such as parks, beaches, and various cultural events that foster community engagement.

Transportation

Old Greenwich is conveniently accessed via Interstate 95, providing easy connections to New York City and other parts of Connecticut. The nearest major airport is Westchester County Airport, approximately 12 miles away, which serves both domestic and international flights. Public transit options include the Metro-North Railroad, with a station providing commuter service to Manhattan.

History

Old Greenwich was officially incorporated in 1880, and its development was heavily influenced by its scenic waterfront location. Historically, it was a center for shipping and fishing, and later evolved into a wealthy suburb appealing to affluent New Yorkers seeking a coastal retreat. Notable events include the establishment of the Old Greenwich Yacht Club in 1899, marking the town's significance in boating culture.

Did you know?

One surprising fact about Old Greenwich is its notable presence in the film industry, having been featured in various movies due to its picturesque settings. Additionally, the town hosts the annual Old Greenwich Arts and Craft Festival, celebrating local artisans and drawing visitors from surrounding areas.

ZIP codes for Old Greenwich, CT (1)
ZIP code City County Map
06870 Old Greenwich Fairfield View map

Demographics & statistics

8,096
Population
40.5
Median age
$215,000
Median household income
$116,766
Per capita income
$1,566,400
Median home value
$3,501
Median monthly rent
80.8%
Home ownership
3.3%
Poverty rate
3.9%
Unemployment
2,349
Housing units
83.2%
Bachelor's or higher

Age distribution

Male Female
277
Under 5
305
482
5–9
530
324
10–14
356
252
15–19
278
184
20–24
202
78
25–34
86
695
35–44
765
558
45–54
614
312
55–59
343
157
60–64
173
306
65–74
336
142
75–84
157
88
85+
96
← Male
Female →

Age summary

GroupCount%
Under 182,64232.6%
18 and over5,45467.4%
65 and over1,12513.9%
Median age40.5 years

Race & ethnicity

White 76.9%
Asian 7.9%
Two or more races 7.7%
Hispanic or Latino 4%
Black or African American 2.3%
Other race 1.1%
GroupCount%
White6,48576.9%
Asian6677.9%
Two or more races6517.7%
Hispanic or Latino3414%
Black or African American1962.3%
Other race971.1%

Household income

Under $10k 3.1%
$10k–$15k 0.9%
$15k–$25k 2.9%
$25k–$35k 2.1%
$35k–$50k 3.7%
$50k–$75k 3.8%
$75k–$100k 8.1%
$100k–$150k 13.5%
$150k–$200k 8.3%
$200k+ 53.5%
Range% of households
Under $10k3.1%
$10k–$15k0.9%
$15k–$25k2.9%
$25k–$35k2.1%
$35k–$50k3.7%
$50k–$75k3.8%
$75k–$100k8.1%
$100k–$150k13.5%
$150k–$200k8.3%
$200k+53.5%
Median income$215,000

Housing

Home values

Under $50k 1.1%
$50k–$100k 1.9%
$100k–$150k 0.5%
$200k–$300k 1.6%
$300k–$500k 6.0%
$500k–$1M 13.0%
$1M+ 75.9%

Housing overview

MetricValue
Median home value$1,566,400
Median rent / month$3,501
Owner occupied80.8%
Renter occupied19.2%
Vacant4.8%
Single-family detached74.8%
Large apartment buildings14.7%
Mobile homes0.0%
Median rooms7.9
Avg household size (owned)2.99

Year built

Era%
2020 or later0.6%
2010–20196.3%
2000–20095.5%
1990–199912.1%
1980–19899.9%
1970–197912.5%
1960–19695.5%
1950–195915.4%
1940–19498.6%
1939 or earlier23.7%

Bedrooms

Size% of units
No bedroom (studio)1.2%
1 bedroom6.8%
2 bedrooms11.6%
3 bedrooms22.6%
4 bedrooms32.5%
5+ bedrooms25.3%

Vehicles per household

Vehicles% of households
No vehicle3.0%
1 vehicle25.9%
2 vehicles49.5%
3 or more21.5%

Heating fuel

Fuel type%
Utility gas70.7%
Electricity18.5%
Propane / LP gas2.5%
Fuel oil7.4%
Wood0.3%
No fuel used0.3%

Households & families

Household typeCount%
Married-couple family1,76764.6%
Cohabiting couple732.7%
Male householder, no spouse35112.8%
Female householder, no spouse54319.9%
Households with children under 181,25245.8%
Households with seniors (65+)80929.6%
Average household size2.96

Marital status

StatusMaleFemale
Never married23.5%22.4%
Married71.7%58.8%
Separated0.0%0.0%
Widowed0.9%8.2%
Divorced3.9%10.5%

Education

Less than 9th grade 0.3%
Some HS, no diploma 1.4%
HS graduate 8.6%
Some college, no degree 4.1%
Associate's degree 2.3%
Bachelor's degree 38.7%
Graduate / professional 44.6%
Metric%
HS diploma or higher98.3%
Bachelor's or higher83.2%

School enrollment (ages 3–17)

TypeCount%
Nursery / preschool33412.5%
Kindergarten2629.8%
Elementary school1,26647.3%
High school55620.8%
College / grad school2599.7%

Employment

Industry of employment

Finance & real estate 27.0%
Professional & management 18.5%
Education & healthcare 13.4%
Arts, food & hospitality 9.4%
Information 7.2%
Retail trade 5.4%
Other services 4.4%
Manufacturing 4.3%
Wholesale trade 3.0%
Construction 2.8%
Transportation & utilities 2.3%
Public administration 1.9%
Agriculture & mining 0.3%

Occupation

Category%
Management, business & arts71.2%
Service5.8%
Sales & office19.0%
Natural resources & construction1.8%
Production & transportation2.2%

Employment type

Type%
Private sector81.9%
Government5.4%
Self-employed12.7%
Unpaid family workers0.0%

Commute

Method%
Drive alone46.8%
Carpool1.2%
Public transit21.9%
Walk0.5%
Other means0.2%
Avg commute (minutes)35.3

Poverty

All people 3.3%
Under 18 years 1.6%
18 and over 4.1%
Married-couple families 1.0%
Female-led households 11.2%

Income support

Source% of households
Social Security25.5%
Retirement income20.1%
Supplemental Security2.2%
Cash public assistance0.0%
Food stamps / SNAP1.6%

Health indicators

Condition%
High blood pressure25.8%
High cholesterol32.4%
Heart disease4.6%
Stroke1.9%
Asthma8.1%
Arthritis19.8%
Kidney disease2.2%
Pulmonary disease3.7%
Cancer7.5%
Behavior / access%
Binge drinking16.1%
No physical activity12.1%
Less than 7 hrs sleep27.9%
Fair or poor health6.7%
Poor mental health10.4%
Poor physical health6.5%
No health insurance6.1%
Visited doctor (checkup)75.5%
Visited dentist81.0%
Cholesterol screening95.3%
Teeth loss4.8%

Veterans & disability

VeteransCount%
Civilian veterans1292.4%
Disability%
Any disability4.7%
Under 181.9%
18–64 years3.0%
65 and over17.9%

Health insurance coverage

Type%
Private insurance87.1%
Public insurance19.5%
Uninsured under 190.0%

Language & origin

Language spoken at home (age 5+)

LanguageCount%
English only7,51492.8%
Spanish2253.0%
Other Indo-European380.5%
Asian & Pacific Islander470.6%
Other languages1401.9%

Place of birth & citizenship

OriginCount%
Native born (US)6,61181.7%
Born in same state6,36178.6%
Born in different state2,94436.4%
Foreign born2503.1%
Naturalized citizen1,48518.3%
Not a US citizen61641.5%

Ancestry

AncestryCount%
Italian1,22215.1%
French1,06713.2%
Arab3494.3%
Norwegian1582%
Irish1471.8%
AncestryCount%
Polish1021.3%
Dutch771%
English600.7%
German410.5%

Technology access

Metric% of households
Computer access33.8%
Internet access98.1%

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

Frequently asked questions
What ZIP codes does Old Greenwich, CT have?
Old Greenwich, CT has one ZIP code: 06870. Each ZIP code serves a distinct delivery area within the city and surrounding region.
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