Residential delivery area · Connecticut
ZIP Code 06830: Greenwich, CT
ZIP code 06830 uses the postal name Greenwich, Connecticut and lies entirely in Fairfield County (Census 2020 ZIP-county file). About 25,000 people live there (Census Bureau, ACS 2020-2024), the more populous of Greenwich's 2 residential ZIP codes. Median household income is $146,654 (Census Bureau, ACS 2020-2024). By Census place, its land lies in Greenwich (32%), Indian Field (7%) and Byram (6%), and 2% in smaller places; 54% is outside any Census place.
- ACS2020-24
- Census2020
- FHFA2024
- ZBP2023
- IRS2022
- Town
- Greenwich · 2 residential ZIPs
- County
- Fairfield County
- Census places
- Greenwich (32%) census-designated place; Indian Field (7%) census-designated place; Byram (6%) census-designated place
- House district
- CT-4 119th Congress
- State
- Connecticut
- Time zone
- Eastern
- Land area
- 13.5 sq mi · 1,838 people per sq mi
- PO Box ZIPs
- 06836 also use the name Greenwich
Where is ZIP code 06830?
06830 centers on 41.038°, -73.624° and covers 13.5 square miles of land plus 4.8 of water. It borders 5 ZIP codes: 06807, 06878, 10573, 06831, 06903.
The map draws ZIP code areas only. For the streets inside 06830, open its center on OpenStreetMap.
Source: U.S. Census Bureau, 2020 ZCTA cartographic boundaries and the 2023 Gazetteer (2020 ZCTAs); ZIP-to-county shares, Census places and House districts (119th Congress) from the Census 2020 relationship files (shares of land); metro area from the OMB delineation (July 2023); town name and time zone from simplemaps US ZIP Codes (CC BY 4.0).
How does 06830 compare with the rest of Greenwich?
| Measure | 06830 | In Greenwich | In Fairfield County | In CT |
|---|---|---|---|---|
| People (ACS 2020-2024) | 24,880 | 1st of 2 | 15th of 46 | 50th of 288 |
| Median household income | $147k | 2nd of 2 | 22nd of 45 | 36th of 228 |
| Median home value | $1.66M | 2nd of 2 | 5th of 46 | 5th of 245 |
Its median household income is higher than in 96% of U.S. residential ZIP codes, and it is denser than 84% of all U.S. residential ZIP codes. ZIP codes at the ACS caps ($250,000 or more for household income, $2,000,000 or more for home value) share the top rank.
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01003, B19013, B25077); ranks by PlainZIP over residential ZIP codes (ZCTAs).
How many people live in 06830?
The 2020 Census counted 25,043 people in 06830; the ACS, which samples households over 2020-2024, estimates 24,880. Between the 2010 and 2020 censuses its population grew 4.2% (its boundary stayed at least 90% the same).
- People, ACS 2020-2024
- 24,880
- 2020 Census count
- 25,043+4.2% since 2010 (24,027)
- Households
- 9,480
- Median age
- 43.6
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01003, B01002, B11001); 2020 Census (DHC P1); 2010 Census (SF1 P1).
Who lives in 06830?
Of the 24,880 people the ACS estimates in 06830, 23.1% are under 18 and 19.8% are 65 or older. The largest group by race and Hispanic origin is White (not Hispanic) (64.4%), then Hispanic or Latino (18.1%).
- Under 1823.1%
- 18 to 6457.1%
- 65 and older19.8%
- White, not Hispanic64.4%
- Hispanic or Latino18.1%
- Other or two or more8.3%
- Asian, not Hispanic5.9%
- Black, not Hispanic3.3%
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01001 age by sex, B03002 Hispanic or Latino origin by race); shares of the estimated population, small ZIP codes carry wide margins.
What do households in 06830 earn?
Median household income is $146,654 (ACS 2020-2024), the 22nd highest of the 45 ranked ZIP codes in Fairfield County. It is not measurably different from 2015-2019 ($147,040 in 2024 dollars): the change is within the surveys' margins of error.
By IRS adjusted gross income per tax return ($796,130, 2022), 06830 ranks 23rd in the U.S. among ZIP codes of 1,000+ people with 200+ returns and at most 1.5 returns per household (see the ranking).
- Median household income
- $146,654±$19,257
- Income per person
- $137,502
- Below the poverty line
- 8.6%
- Unemployed (of the labor force)
- 7.9%
- Adults 25+ with a bachelor's degree
- 67.9%
- Adjusted gross income per tax return, 2022
- $796,13012,170 returns; wages 33% of AGI (IRS)
Source: U.S. Census Bureau, ACS 2020-2024 and 2015-2019 5-year estimates (B19013, B19301, B17001, B23025, B15003; 2015-2019 dollars converted with the BLS CPI-U, 1.22699); IRS Statistics of Income, ZIP code data, tax year 2022 (adjusted gross income per return, filed under the address on the return).
What are homes worth in 06830?
- Median home value (owners' estimate)
- $1,660,700
- Median gross rent
- $2,374
- Homes owned by their occupants
- 57.4%
- Housing units
- 10,911
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B25077, B25064, B25003, B25001); FHFA House Price Index, annual five-digit ZIP, updated 2026-03-31.
What businesses are in 06830?
1,519 business establishments had a location in this ZIP code in 2023, 7 more than in 2018; the most are in finance and insurance (ZIP Code Business Patterns).
- Finance and insurance269
- Retail trade210
- Professional, scientific, and technical services179
- Other services (except public administration)161
- Health care and social assistance151
- Accommodation and food services109
Source: U.S. Census Bureau, ZIP Code Business Patterns 2023 and 2018 (establishments with paid employees, by the business's ZIP code).
Which ZIP codes are next to 06830?
| ZIP | Town | People | Household income | Distance |
|---|---|---|---|---|
| 06807 | Cos Cob | 7,650 | $192k | 2.1 mi |
| 06878 | Riverside | 8,328 | $250k+ | 2.2 mi |
| 10573 | Port Chester, NY | 40,786 | $106k | 3.1 mi |
| 06831 | Greenwich | 15,210 | $227k | 4.0 mi |
| 06903 | Stamford | 14,010 | $204k | 7.3 mi |
| 06870 | Old Greenwich | 7,864 | $250k+ | 2.9 mi (near) |
| 06902 | Stamford | 73,392 | $95k | 4.4 mi (near) |
| 10577 | Purchase, NY | 5,945 | $250k+ | 4.5 mi (near) |
| 06901 | Stamford | 11,037 | $103k | 4.6 mi (near) |
Source: PlainZIP from the Census 2020 ZCTA boundaries (shared edges) and internal points; figures ACS 2020-2024.