PlainZIP

Greenwich, CT · standard

ZIP Code 06830

Fairfield County, Connecticut - Census ACS demographics, housing tenure, and business patterns, benchmarked against every US ZIP.

24,027
683/sq mi
$146,654
Median income
$1,660,700
Median home value
67.9%
Bachelor's or higher

The verdict

Greenwich pairs a top-decile household income with top-decile home values, in a low-density, mixed-tenure area.

Top 4%
household income, US ZIPs
Top 1%
home value, US ZIPs
683
people per sq mi
57%
owner-occupied homes

Source: U.S. Census Bureau ACS 5-Year Estimates (2019–2023). Percentiles rank ZIP 06830 against every reporting US ZIP.

ZIP code 06830 is a densely settled ZIP (a standard USPS delivery area) in Greenwich, Fairfield County, Connecticut, with 24,027 residents across 35.2 square miles, a density of 683 people per square mile, in the New York time zone.

ZIP 06830 skews affluent, with a median household income of $146,654 (30% above the Connecticut average), while per-capita income is $137,502. The poverty rate stands at 8.6% and the unemployment rate at 7.9%. The typical home here is valued at $1,660,700 (282% above the state average); renters pay a median of $2,374 monthly, and 57.4% of units are owner-occupied.

This is a highly-educated ZIP: 67.9% of adults hold a bachelor's degree or higher, the median age is 43.6, and the average commute is 28 minutes. To put 06830 in local context, 10 ZIP codes within roughly 10 miles appear further down this page alongside 6 additional ZIPs in Fairfield County, for a geography-aware comparison.

Every figure on this page is sourced from the U.S. Census Bureau American Community Survey 5-Year Estimates (including median rent) and the FHFA House Price Index, no estimates, no proprietary scoring. Verify with Census →

Top industries in ZIP 06830

Top 5 sectors by establishment count in Greenwich, CT

Which industries have the most business establishments in ZIP 06830.

establishments

What this shows Establishment counts come from the Census ZIP Code Business Patterns program, which counts physical business locations rather than employees or revenue.

Source U.S. Census Bureau · ZIP Code Business Patterns (ZBP) As of 2023

Source: U.S. Census Bureau, American Community Survey 5-Year Estimates + ZIP Code Business Patterns + FHFA HPI ACS demographics and median rent, ZBP business establishments, FHFA HPI for ZIP 06830, Greenwich, CT · 2023 Census ACS 5-Year Estimates use a rolling 60-month sample for stable small-geography estimates; ZBP updated annually; FHFA HPI updated quarterly/annually.

Quick Facts

24,027

Population

35.2

Area (sq mi)

683

People / sq mi

New York

Time Zone

standard

ZIP Type

Neighborhood Scorecard
Get an A-F grade across income, safety, housing, rent, education, commute, and childcare for this ZIP code.
View Scorecard →

Who lives in ZIP 06830?

43.6

Median Age

46.0%

Male

54.0%

Female

24.2%

Foreign-Born

White 66.4%
African American 4.6%
Asian 5.9%
American Indian or Alaska Native 0.1%
Native Hawaiian or Pacific Islander 0.0%
Two or More Ethnicities 12.1%
Hispanic or Latino 18.1%

Hispanic or Latino is an ethnicity category from the Census Bureau and may overlap with other categories above.

Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)

How much do residents earn?

$146,654

Median Household Income

+30% vs state

$137,502

Per Capita Income

8.6%

Poverty Rate

7.9%

Unemployment Rate

27.8 min

Mean Commute Time

How ZIP 06830 ranks nationally

Greenwich, CT household income vs. every US ZIP code

Median household income, the full national distribution, with this ZIP marked

$146,654 Top 4% higher than 96% of 30,318 US ZIPs

$0–$20,000: 118 US ZIPs (0%). Below this entry. $20,000–$40,000: 1,573 US ZIPs (5%). Below this entry. $40,000–$60,000: 7,092 US ZIPs (23%). Below this entry. $60,000–$80,000: 9,980 US ZIPs (33%). Below this entry. $80,000–$100,000: 5,778 US ZIPs (19%). Below this entry. $100,000–$120,000: 2,855 US ZIPs (9%). Below this entry. $120,000–$140,000: 1,362 US ZIPs (4%). Below this entry. $140,000–$160,000: 686 US ZIPs (2%). This entry sits in this band. $160,000–$180,000: 364 US ZIPs (1%). Above this entry. $180,000–$200,000: 186 US ZIPs (1%). Above this entry. $200,000–$220,000: 324 US ZIPs (1%). Above this entry. This ZIP $0 $200K+ every reporting US ZIP, bucketed by value

Each bar is a $20K-wide band; taller bars hold more US ZIPs. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.

Source U.S. Census Bureau, ACS 5-Year Estimates · 2019–2023

Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)

What is the education profile here?

High School Graduate or Higher 81.0%
Bachelor's Degree or Higher 67.9%

Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)

What does housing look like?

10,911

Total Housing Units

9,480

Occupied Units

1,431

Vacant Units

2.59

Avg Household Size

Occupancy Type

Owner 57.4%
Renter 42.6%

$1,660,700

Median Home Value

+282% vs state

$2,374

Median Rent

1957

Median Year Built

Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)

How have home values changed over time?

FHFA House Price Index, annual appreciation data based on repeat sales and appraisals

-16.0%

YoY Change (2024)

228

HPI Index (2000 = 100)

+128%

Total Change Since 2000

Home values in ZIP 06830 have decreased 16.0% over the past year (2024). Since 2000, this ZIP has seen +128% cumulative appreciation.

Year Annual Change HPI Index
2020 -0.1% 166
2021 +12.0% 186
2022 -9.2% 169
2023 +60.8% 271
2024 -16.0% 228

Source: Federal Housing Finance Agency (FHFA) House Price Index, All-Transactions, Five-Digit ZIP Codes (Developmental Index). Index base = 100 in year 2000. Data through 2024. ZIP codes with few transactions may show missing values.

What businesses operate in this ZIP?

Census Bureau data shows 1,519 business establishments in ZIP 06830, employing approximately 30,585 people with a combined annual payroll of $5,239,013,000.

1,519

Businesses

30,585

Employees

$5.2B

Annual Payroll

17

Industry Sectors

Industry Establishments % of Total
Finance and insurance 269 17.7%
Retail trade 210 13.8%
Professional, scientific, and technical services 179 11.8%
Other services (except public administration) 161 10.6%
Health care and social assistance 151 9.9%
Accommodation and food services 109 7.2%
Real estate and rental and leasing 91 6.0%
Construction 78 5.1%
Administrative and support and waste management and remediation services 73 4.8%
Arts, entertainment, and recreation 39 2.6%
Wholesale trade 34 2.2%
Information 34 2.2%
Educational services 33 2.2%
Management of companies and enterprises 23 1.5%
Manufacturing 18 1.2%
Transportation and warehousing 11 0.7%
Utilities 3 0.2%

Source: U.S. Census Bureau, ZIP Code Business Patterns (ZBP), 2023. Employment figures may include noise for disclosure avoidance.

Nearby ZIP Codes

Want a side-by-side? Compare 06830 vs 06807 →

ZIP 06830 vs its nearest neighbors, by population

Resident population of this ZIP and the closest reporting ZIP codes within ~10 miles.

residents

What this shows Among its immediate neighbors, ZIP 06830 ranks #3 by population - useful context the national average alone can't give.

Source U.S. Census Bureau · ACS 5-Year Estimates As of 2019–2023

ZIP 06830 vs its nearest neighbors, by median income

Median household income of this ZIP and the closest reporting ZIP codes within ~10 miles.

median income

What this shows By household income, ZIP 06830 ranks #6 of 9 neighboring ZIPs, local affluence varies block to block, not just metro to metro.

Source U.S. Census Bureau · ACS 5-Year Estimates As of 2019–2023
ZIP Code City Population Distance
06807 Cos Cob, CT 7,150 1.9 mi
06878 Riverside, CT 8,043 2.4 mi
06870 Old Greenwich, CT 7,316 3.1 mi
06831 Greenwich, CT 14,792 3.4 mi
10573 Port Chester, NY 38,352 3.5 mi
06902 Stamford, CT 63,406 4.1 mi
06901 Stamford, CT 6,828 4.5 mi
10577 Purchase, NY 6,552 4.7 mi
06905 Stamford, CT 19,649 5.0 mi
06906 Stamford, CT 9,088 5.5 mi

More ZIP Codes in Fairfield County

06902 standard
Stamford, CT
Pop: 63,406
06810 standard
Danbury, CT
Pop: 49,482
06606 standard
Bridgeport, CT
Pop: 46,236
06484 standard
Shelton, CT
Pop: 39,559
06611 standard
Trumbull, CT
Pop: 36,091
06824 standard
Fairfield, CT
Pop: 33,900

Related Areas

Fairfield County Greenwich, CT Connecticut

Frequently Asked Questions

What county is ZIP code 06830 in? ▼
ZIP code 06830 (Greenwich) is located in Fairfield County, Connecticut. Fairfield County contains multiple ZIP codes, see the full list at /counties/fairfield-ct.
What is the population of ZIP code 06830? ▼
ZIP code 06830 in Greenwich, CT has a population of 24,027 according to the Census Bureau ACS 2023 estimates.
What is the median household income in ZIP 06830? ▼
The median household income in ZIP 06830 is $146,654, which is 92% above the national average of $76,288.
What is the average home value in ZIP 06830? ▼
The median home value in ZIP 06830 is $1,660,700, which is 497% above the national average of $278,155.
What is the demographic makeup of ZIP 06830? ▼
The largest racial group in ZIP 06830 is White at 66.4%. Hispanic or Latino residents make up 18.1% of the population.
How many businesses are in ZIP code 06830? ▼
ZIP code 06830 has 1,519 business establishments employing approximately 30,585 people, according to Census Bureau ZIP Code Business Patterns (ZBP) 2023 data.
What are the main industries in ZIP code 06830? ▼
The top industries by establishment count in ZIP 06830 are: Finance and insurance (269), Retail trade (210), Professional, scientific, and technical services (179). There are 17 industry sectors represented in total.
How have home values changed in ZIP code 06830? ▼
According to the FHFA House Price Index, home values in ZIP 06830 decreased by 16.0% in 2024. Since 2000, home values in this ZIP have appreciated by approximately 128%. This is a developmental index based on repeat sales and appraisal data from Fannie Mae and Freddie Mac.
What is the education level in ZIP code 06830? ▼
In ZIP code 06830, 81.0% of residents aged 25+ have a high school diploma or higher, and 67.9% hold a bachelor's degree or higher. These figures come from the Census Bureau ACS 5-Year Estimates (2023).
What is the average commute time in ZIP 06830? ▼
The mean commute time for workers in ZIP code 06830 is 27.8 minutes according to Census ACS data. The national average is roughly 26 minutes, so commuters here spend more time traveling to work than typical.
What percentage of residents own vs. rent in ZIP 06830? ▼
In ZIP code 06830, approximately 57.4% of occupied housing units are owner-occupied and 42.6% are renter-occupied, based on Census ACS 2023 data.
What is the poverty rate in ZIP code 06830? ▼
The poverty rate in ZIP code 06830 is 8.6% according to Census Bureau ACS 2023 estimates. This measures the percentage of the population living below the federal poverty threshold.

Read our methodology to see how this data is sourced, computed, and verified.