Get API Key →
US ZIP Code Profile

ZIP Code 06830
Greenwich, Connecticut

ZIP code 06830 is in Greenwich, located in Fairfield County, Connecticut, within the Bridgeport-Stamford-Norwalk metro area. Its 2020 Census population was 25,043. The estimated median adjusted gross income per tax return is $89,583, and about 32% of filers report $200,000 or more.

2020 Population
25,043
Census ZCTA
County
Fairfield
FIPS 09001
Median income (est.)
$89,583
IRS SOI 2022
Land Area
13.593 mi²
+ 4.788 mi² water

01Location & Geography

Authoritative geographic identifiers from the U.S. Census Bureau, ANSI, and FIPS standards.

Primary CityGreenwich, CT
CountyFairfield County (FIPS 09001)
StateConnecticut (FIPS 09)
Metro Area (MSA)Bridgeport-Stamford-Norwalk, CT Metro Area (14860)
Census Region / DivisionNortheast Region · New England Division
Coordinates41.0376, -73.62434
Land / Water Area13.593 mi² land · 4.788 mi² water

02Income & Economics

Distribution of the 12,170 individual tax returns filed in 06830 by adjusted gross income bracket (IRS SOI, 2022).

< $25K
22.7%
$25K–$50K
13.2%
$50K–$75K
9.9%
$75K–$100K
7.4%
$100K–$200K
14.8%
$200K+
32.1%
The $200,000+ bracket accounts for 95% of 06830's total adjusted gross income, from 32% of returns — a concentration that drives the gap between the median ($89,583) and the average.
Estimated median = median adjusted gross income per tax return, interpolated from IRS SOI brackets. Differs from U.S. Census household income.

03Income Over Time

Year-over-year change in 06830's IRS income metrics, 2020–2022.

Median income (2021→2022)
$89,583
▲ 2.9%
Filers earning $200K+
32.1%
▲ 0.1 pt
Total filers
12,170
▲ 0.3%
GET /zipc/v2/zipcodes/06830/soi?year=… $74K 2020 $87K 2021 $90K 2022
Median = adjusted gross income per return, interpolated from IRS SOI brackets. Figures are nominal (not inflation-adjusted).

04Population Trend

Decennial U.S. Census population for the 06830 ZCTA.

2000
24,552
 
2010
24,027
▼ -2.1%
2020
25,043
▲ +4.2%

05Nearby ZIP Codes — Live Radius Search

Drag the slider to filter ZIP codes by distance from 06830. Powered by the same radius endpoint developers call from the API.

GET /zipc/v2/radius

ZIP codes within range of 06830

Greenwich and its immediate neighbors, sorted by distance.

3 mi
GET /zipc/v2/distance

Distance from 06830 to any ZIP

Enter a 5-digit ZIP to calculate the distance.

06USPS Postal Details

Delivery and facility attributes from the monthly USPS dataset.

ZIP ClassificationNon-Unique Zip
Facility TypePost Office
Carrier Route SortB
USPS Finance Number083060
City AliasesBelle Haven, Greenwich

07Frequently Asked Questions

What county is ZIP code 06830 in?

ZIP code 06830 is in Fairfield County, Connecticut (county FIPS code 09001).

What city is ZIP code 06830?

The primary USPS city for 06830 is Greenwich, CT.

What metro area (MSA) is 06830 in?

06830 is part of the Bridgeport-Stamford-Norwalk, CT Metro Area (MSA code 14860).

What is the population of ZIP code 06830?

The 2020 Census population of 06830 was 25,043 residents.

What is the median income in ZIP code 06830?

Based on IRS Statistics of Income data, the estimated median adjusted gross income per tax return in 06830 is about $89,583, with around 32% of filers reporting $200,000 or more. Note that adjusted gross income is a tax measure and differs from U.S. Census household income.