Greenwich, CT ZIP Codes
2 ZIP codes serve Greenwich, Connecticut: 06830 and 06831. Together they are home to 40,090 residents in 14,862 households. That is more than the 14,792 people counted inside Greenwich Census-designated place, because these ZIP codes reach past its boundary. Median household income ranges from $146,654 in 06830 to $227,159 in 06831.
Greenwich Census-designated place
| Measure | Census figure |
|---|---|
| Residents | 14,792 |
| Households | 5,884 |
| Median household income | $134,914 |
| Median home value | $1,515,700 |
| Median age | 43.9 |
| Median rent | $2,082 |
All 2 ZIP codes together
| Measure | Value |
|---|---|
| Residents (sum of ZIP codes) | 40,090 |
| Households (sum of ZIP codes) | 14,862 |
| Median household income, range across ZIP codes | $146,654 (06830) to $227,159 (06831) |
| Household-weighted average of ZIP medians (an approximation, not a true median) | $175,807 |
| Homeowners | 65.2% |
| Households with kids under 18 | 31.7% |
| Moved in the past year | 11.7% |
| Carrier routes in EDDM2GO's route library | 44 routes, 16,200 homes (2 of 2 ZIP codes) |
Top facts
- Highest median household income in Greenwich: 06831 ($227,159)
- Most residents: 06830 (24,880 people)
- Highest homeownership: 06831 (79.0% own their home)
- Most households with kids: 06830 (31.9% of households)
- Most new movers: 06830 (12.9% moved in last year)
- Youngest median age: 06830 (43.6 years)
- Highest median home value: 06831 ($1,696,000)
Every ZIP code in Greenwich
| ZIP | Mailing city | Residents | Households | Median income | Home value | Homeowners | With kids | New movers | Carrier routes | Mailboxes | Why listed |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 06830 | Greenwich | 24,880 | 9,480 | $146,654 | $1,660,700 | 57.4% | 31.9% | 12.9% | 28 | 11,889 | 32% of its land; mailing city |
| 06831 | Greenwich | 15,210 | 5,382 | $227,159 | $1,696,000 | 79.0% | 31.3% | 9.8% | 16 | 6,098 | 2% of its land; mailing city |
A ZIP code is listed for Greenwich when at least 10% of its land lies inside the Greenwich Census-designated place, when it holds at least 10% of the place's land, or when its USPS mailing city is Greenwich. The table shows which applies. Totals add up whole ZIP codes, so they include any parts outside Greenwich.
Counties
- Fairfield County — 46 ZIP codes
Price a mailing to Greenwich ZIP codes
EDDM guides
Pick carrier routes on the EDDM route map
Frequently asked questions
- What ZIP codes are in Greenwich, CT?
- 06830 and 06831. A ZIP code is listed for Greenwich when at least 10% of its land lies inside the Greenwich Census-designated place, when it holds at least 10% of the place's land, or when its USPS mailing city is Greenwich.
- What is the population of Greenwich, CT?
- The Census Bureau counts 14,792 residents inside Greenwich Census-designated place (ACS 2020–2024). The 2 ZIP codes that serve Greenwich hold 40,090 residents in all.
- What is the median household income in Greenwich, CT?
- $134,914 inside Greenwich Census-designated place, per the Census Bureau. Across its ZIP codes the medians run from $146,654 to $227,159.
- Which Greenwich ZIP code has the highest median household income?
- 06831, at $227,159, among ZIP codes with at least 1,000 residents.
- How many carrier routes and mailboxes are in Greenwich, CT?
- For the 2 of 2 ZIP codes in EDDM2GO's stored route library: 44 carrier routes reaching 16,200 residential and 1,801 business mailboxes.
This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.