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 High-density area
- $146,654
- Median income Above-median income area
- $1,660,700
- Median home value Above-median home value
- 67.9%
- Bachelor's or higher Above-average bachelor's attainment
National ZIP placement
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.
FHFA HPI release change
What changed in the latest House Price Index year
- FHFA House Price Index values in ZIP 06830 (Greenwich, CT) fell -16.0% from 2023 to 2024. The all-transactions index moved from 271.3 in 2023 to 227.9 in 2024 (2000 = 100).
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 average Connecticut ZIP), while per-capita income is $137,502. The poverty rate is 8.6%, with unemployment at 7.9%; those measures add context to the income figure. Median home value is $1,660,700 (282% above the average Connecticut ZIP) and median rent is $2,374; 57.4% of occupied homes 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. The page also surfaces 10 ZIP codes within roughly 10 miles and 6 more in Fairfield County, so 06830 can be compared with both its immediate and county-level context.
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.
- Finance and insurance
Finance and insurance
269 establishments
- Retail trade
Retail trade
210 establishments
- Professional, scientific, and technical services
Professional, scientific, and technical services
179 establishments
- Other services (except public administration)
Other services (except public administration)
161 establishments
- Health care and social assistance
Health care and social assistance
151 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, 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
Who lives in ZIP 06830?
43.6
Median Age
46.0%
Male
54.0%
Female
24.2%
Foreign-Born
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 ZIP avg
$137,502
Per Capita Income
8.6%
Poverty Rate
7.9%
Unemployment Rate
27.8 min
Mean Commute Time
How ZIP 06830 ranks among Connecticut ZIPs
Greenwich, CT household income vs. every Connecticut ZIP code
Median household income among 270 reporting Connecticut ZIPs (this ZIP's population is too small for a reliable national-corpus placement)
$146,654 Top 15% higher than 85% of 270 Connecticut ZIPs
Each bar is a $20K-wide band; taller bars hold more Connecticut 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?
Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)
What does housing look like?
Housing stock: occupied vs vacant
10,911housing units
10,911
Total Housing Units
9,480
Occupied Units
1,431
Vacant Units
2.59
Avg Household Size
Occupancy Type
$1,660,700
Median Home Value
+282% vs state ZIP avg
$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.
- 06902
Stamford (06902)
63,406 residents
- 10573
Port Chester (10573)
38,352 residents
- 06830 24,027
Greenwich (06830)
24,027 residents
- 06905 19,649
Stamford (06905)
19,649 residents
- 06831 14,792
Greenwich (06831)
14,792 residents
- 06906 9,088
Stamford (06906)
9,088 residents
- 06878 8,043
Riverside (06878)
8,043 residents
- 06870 7,316
Old Greenwich (06870)
7,316 residents
- 06807 7,150
Cos Cob (06807)
7,150 residents
What this shows Among its immediate neighbors, ZIP 06830 ranks #3 by population - useful context the national average alone can't give.
ZIP 06830 vs its nearest neighbors, by median income
Median household income of this ZIP and the closest reporting ZIP codes within ~10 miles.
- 06870
Old Greenwich (06870)
$250,000 median income
- 06878
Riverside (06878)
$250,000 median income
- 10577
Purchase (10577)
$250,000 median income
- 06831
Greenwich (06831)
$227,159 median income
- 06807
Cos Cob (06807)
$192,115 median income
- 06830
Greenwich (06830)
$146,654 median income
- 06905
Stamford (06905)
$136,757 median income
- 10573
Port Chester (10573)
$105,686 median income
- 06901
Stamford (06901)
$102,641 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.
| 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 |
Nationwide ZIPs with similar ACS profiles
Two Census-derived peer sets for ZIP 06830, both outside CT so the neighborhoods are not geographic containment (Nearby and same-county blocks stay local).
Similar population
Nearest cross-state ZIPs by resident population (24,027 here; floor ≥1,000).
Similar median household income
Nearest cross-state ZIPs by ACS median household income.
More ZIP Codes in Fairfield County
Related Areas
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.
Related
Take this with you
What to do with ZIP 06830's numbers, next.
- See how ZIP 06830 compares to a neighboring ZIP code on the same Census fields Compare this ZIP
- Check where Greenwich, CT ranks among every U.S. ZIP code on income, education, or homeownership View national rankings
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ZIP Code Tabulation Areas (ZCTAs) are Census Bureau approximations of USPS ZIP codes; figures describe the ZCTA area, not any single address within it.