06830 ZIP Code — Greenwich, CT

Fairfield County, Connecticut

ZIP code 06830 is located in Greenwich, Connecticut, within Fairfield County. It covers approximately 13.54 square miles and serves a population of 24,881 residents. This is a standard ZIP code in the Eastern (ET) timezone, served by area code 203/475.

About ZIP code 06830

The housing stock consists of a mix of housing types. Most homes were built in the pre-1940, giving the area an established character. Median home value is $1,719,600. Owner-occupancy sits near the national average at 54%.

The gap between median ($140,024) and mean household income suggests income inequality — a small number of higher earners pull the average up. The poverty rate of 6% is below the national average. 33% 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 29 minutes is near the national average.

Educational attainment is high — 66% of residents hold a bachelor's degree or higher, well above the national average of 33%.

Overall, ZIP code 06830 reflects a community defined by a highly educated population and a significant Social Security-dependent population.

24,881

population

13.54

sq mi land

Standard

ZIP type

Eastern (ET)

timezone

06830 ZIP code map

Cities in ZIP code 06830

Below are the cities the US Postal Service accepts for ZIP code 06830. Using any city not on this list may result in mail delivery delays.

City	Status
Greenwich	Acceptable
Greenwich	Preferred

Nearby ZIP codes

06878 Riverside (2.3 mi) 06807 Cos Cob (2.3 mi) 06870 Old Greenwich (2.9 mi) 10573 Port Chester (3 mi) 06831 Greenwich (3.4 mi) 06910 Stamford (3.6 mi) 06902 Stamford (4.4 mi) 06914 Stamford (4.6 mi) 06913 Stamford (4.6 mi) 06927 Stamford (4.6 mi) 06926 Stamford (4.6 mi) 06901 Stamford (4.7 mi)

Demographics updated 06/2026

Population
Total population	24,881
Population density	1,838 / sq mi
State FIPS	09
County FIPS	001

Geography
Land area	13.54 sq mi
Water area	4.81 sq mi
Latitude	41.0398
Longitude	-73.6258
Timezone	Eastern (ET)
Area code	203/475

Total population by age

Gender

Race & ethnicity

Economics updated 06/2026

Household income

Income range	This ZIP	County avg	State avg
Under $50k	25.1%	27.3%	32.0%
$50k – $100k	17.3%	23.7%	27.7%
$100k – $200k	20.5%	26.8%	27.1%
Over $200k	37.1%	22.2%	13.2%

Demographics & statistics

24,881

Population

1,838

People per sq mi

43.4

Median age

$140,024

Median household income

$121,255

Per capita income

$1,719,600

Median home value

$2,256

Median monthly rent

54.4%

Home ownership

6.2%

Poverty rate

8.4%

Unemployment

6,594

Housing units

65.5%

Bachelor's or higher

Age distribution

Male Female

618

Under 5

696

665

5–9

749

852

10–14

959

943

15–19

1,062

620

20–24

698

1,063

25–34

1,197

1,271

35–44

1,431

1,795

45–54

2,021

829

55–59

934

935

60–64

1,052

1,148

65–74

1,292

684

75–84

770

281

85+

316

← Male

Female →

Age summary

Group	Count	%
Under 18	5,735	23.0%
18 and over	19,146	77.0%
65 and over	4,491	18.0%
Median age	43.4 years

Race & ethnicity

White 67.2%

Hispanic or Latino 9.8%

Two or more races 7.8%

Other race 5.5%

Asian 4.9%

Black or African American 4.8%

Group	Count	%
White	18,526	67.2%
Hispanic or Latino	2,692	9.8%
Two or more races	2,151	7.8%
Other race	1,523	5.5%
Asian	1,344	4.9%
Black or African American	1,322	4.8%

Household income

Income range	This ZIP	County avg	State avg
Under $50k	25.1%	27.3%	32.0%
$50k – $100k	17.3%	23.7%	27.7%
$100k – $200k	20.5%	26.8%	27.1%
Over $200k	37.1%	22.2%	13.2%

Under $10k 2.4%

$10k–$15k 1.4%

$15k–$25k 5.1%

$25k–$35k 5.1%

$35k–$50k 6.3%

$50k–$75k 8.7%

$75k–$100k 8.0%

$100k–$150k 16.3%

$150k–$200k 8.8%

$200k+ 37.8%

Range	% of households
Under $10k	2.4%
$10k–$15k	1.4%
$15k–$25k	5.1%
$25k–$35k	5.1%
$35k–$50k	6.3%
$50k–$75k	8.7%
$75k–$100k	8.0%
$100k–$150k	16.3%
$150k–$200k	8.8%
$200k+	37.8%
Median income	$140,024

Housing

Home values

Under $50k 0.9%

$50k–$100k 0.3%

$150k–$200k 0.2%

$200k–$300k 0.8%

$300k–$500k 6.3%

$500k–$1M 22.8%

$1M+ 68.7%

Housing overview

Metric	Value
Median home value	$1,719,600
Median rent / month	$2,256
Owner occupied	54.4%
Renter occupied	45.6%
Vacant	13.5%
Single-family detached	46.2%
Large apartment buildings	12.4%
Mobile homes	0.1%
Median rooms	6.0
Avg household size (owned)	2.69

Year built

Era	%
2020 or later	0.1%
2010–2019	4.7%
2000–2009	7.7%
1990–1999	4.4%
1980–1989	10.2%
1970–1979	8.5%
1960–1969	10.6%
1950–1959	16.7%
1940–1949	7.4%
1939 or earlier	29.7%

Bedrooms

Size	% of units
No bedroom (studio)	3.5%
1 bedroom	12.8%
2 bedrooms	24.9%
3 bedrooms	23.9%
4 bedrooms	16.2%
5+ bedrooms	18.8%

Vehicles per household

Vehicles	% of households
No vehicle	5.3%
1 vehicle	37.7%
2 vehicles	36.3%
3 or more	20.8%

Heating fuel

Fuel type	%
Utility gas	64.3%
Electricity	18.4%
Propane / LP gas	4.2%
Fuel oil	11.9%
No fuel used	0.6%

Households & families

Household type	Count	%
Married-couple family	5,107	54.2%
Cohabiting couple	343	3.6%
Male householder, no spouse	1,342	14.2%
Female householder, no spouse	2,631	27.9%
Households with children under 18	3,105	33.0%
Households with seniors (65+)	3,216	34.1%
Average household size	2.61

Marital status

Status	Male	Female
Never married	32.7%	30.6%
Married	57.4%	48.3%
Separated	0.6%	1.2%
Widowed	1.2%	9.3%
Divorced	8.1%	10.6%

Education

Less than 9th grade 2.6%

Some HS, no diploma 2.3%

HS graduate 14.4%

Some college, no degree 9.7%

Associate's degree 5.5%

Bachelor's degree 31.3%

Graduate / professional 34.2%

Metric	%
HS diploma or higher	95.1%
Bachelor's or higher	65.5%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	358	5.7%
Kindergarten	253	4.0%
Elementary school	2,630	41.9%
High school	1,888	30.0%
College / grad school	1,155	18.4%

Employment

Industry of employment

Finance & real estate 22.3%

Education & healthcare 20.9%

Professional & management 16.6%

Other services 7.4%

Construction 6.4%

Retail trade 6.3%

Arts, food & hospitality 5.9%

Manufacturing 4.3%

Transportation & utilities 2.6%

Public administration 2.6%

Wholesale trade 2.5%

Information 1.9%

Agriculture & mining 0.3%

Occupation

Category	%
Management, business & arts	56.6%
Service	14.8%
Sales & office	17.3%
Natural resources & construction	5.8%
Production & transportation	5.5%

Employment type

Type	%
Private sector	80.7%
Government	8.1%
Self-employed	10.9%
Unpaid family workers	0.3%

Commute

Method	%
Drive alone	56.3%
Carpool	6.3%
Public transit	12.9%
Walk	5.9%
Work from home	17.9%
Other means	0.7%
Avg commute (minutes)	29.4

Poverty

All people 6.2%

Under 18 years 7.1%

18 and over 5.9%

Married-couple families 3.0%

Female-led households 6.2%

Income support

Source	% of households
Social Security	32.6%
Retirement income	22.2%
Supplemental Security	3.9%
Cash public assistance	2.5%
Food stamps / SNAP	5.2%

Health indicators

Condition	%
Obesity	21.9%
High blood pressure	28.4%
High cholesterol	32.3%
Diabetes	7.6%
Heart disease	5.5%
Stroke	2.5%
Asthma	8.5%
Arthritis	21.6%
Kidney disease	2.6%
Pulmonary disease	4.7%
Cancer	7.6%

Behavior / access	%
Smoking	9.6%
Binge drinking	15.0%
No physical activity	16.2%
Less than 7 hrs sleep	29.4%
Depression	16.6%
Fair or poor health	9.5%
Poor mental health	11.5%
Poor physical health	8.0%
No health insurance	9.7%
Visited doctor (checkup)	75.6%
Visited dentist	75.0%
Cholesterol screening	93.7%
Teeth loss	7.3%

Veterans & disability

Veterans	Count	%
Civilian veterans	425	2.2%

Disability	%
Any disability	7.6%
Under 18	2.0%
18–64 years	5.7%
65 and over	21.4%

Health insurance coverage

Type	%
Private insurance	75.4%
Public insurance	30.3%
No insurance	5.3%
Uninsured under 19	1.5%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	23,567	94.7%
Spanish	2,076	8.8%
Other Indo-European	1,465	6.2%
Asian & Pacific Islander	431	1.8%
Other languages	180	0.8%

Place of birth & citizenship

Origin	Count	%
Native born (US)	18,830	75.7%
Born in same state	18,328	73.7%
Born in different state	7,009	28.2%
Foreign born	502	2.0%
Naturalized citizen	6,051	24.3%
Not a US citizen	3,418	56.5%

Ancestry

Ancestry	Count	%
Italian	3,653	14.7%
French	2,449	9.8%
Arab	1,568	6.3%
Polish	314	1.3%
English	275	1.1%

Ancestry	Count	%
Dutch	171	0.7%
Norwegian	113	0.5%
German	73	0.3%
Irish	57	0.2%

Technology access

Metric	% of households
Computer access	37.9%
Internet access	95.9%

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

Frequently asked questions about ZIP code 06830

What city is ZIP code 06830 in?

ZIP code 06830 is primarily assigned to Greenwich, Connecticut.

What county is ZIP code 06830 in?

ZIP code 06830 falls within Fairfield County, Connecticut.

How educated is the population of ZIP code 06830?

66% of residents hold a bachelor's degree or higher — well above the national average of ~33%, reflecting a highly educated population.

What is the median household income in ZIP code 06830?

The median household income in ZIP code 06830 is $140,024, above the national median of ~$75,000.

What is the typical home value in ZIP code 06830?

The median home value in ZIP code 06830 is $1,719,600.

What is the population of ZIP code 06830?

ZIP code 06830 has an estimated population of 24,881 residents, with a density of 1,838 people per square mile.

What timezone is ZIP code 06830 in?

ZIP code 06830 observes the EST timezone.