Old Greenwich, CT ZIP Codes
One ZIP code serves Old Greenwich, Connecticut: 06870. Together they are home to 7,864 residents in 2,756 households.
Old Greenwich Census-designated place
| Measure | Census figure |
|---|---|
| Residents | 6,936 |
| Households | 2,385 |
| Median household income | $250,001 |
| Median home value | $1,844,700 |
| Median age | 40.5 |
| Median rent | $3,501 |
All 1 ZIP codes together
| Measure | Value |
|---|---|
| Residents (sum of ZIP codes) | 7,864 |
| Households (sum of ZIP codes) | 2,756 |
| Median household income, range across ZIP codes | $250,001 (06870) to $250,000+ (06870) |
| Household-weighted average of ZIP medians (an approximation, not a true median) | $250,001 |
| Homeowners | 83.9% |
| Households with kids under 18 | 41.9% |
| Moved in the past year | 13.1% |
| Carrier routes in EDDM2GO's route library | 9 routes, 2,794 homes (1 of 1 ZIP codes) |
Every ZIP code in Old Greenwich
| ZIP | Mailing city | Residents | Households | Median income | Home value | Homeowners | With kids | New movers | Carrier routes | Mailboxes | Why listed |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 06870 | Old Greenwich | 7,864 | 2,756 | $250,000+ | $1,788,700 | 83.9% | 41.9% | 13.1% | 9 | 3,002 | 87% of its land; mailing city |
A ZIP code is listed for Old Greenwich when at least 10% of its land lies inside the Old Greenwich Census-designated place, when it holds at least 10% of the place's land, or when its USPS mailing city is Old Greenwich. The table shows which applies. Totals add up whole ZIP codes, so they include any parts outside Old Greenwich.
Counties
- Fairfield County — 46 ZIP codes
Price a mailing to Old Greenwich ZIP codes
EDDM guides
Pick carrier routes on the EDDM route map
Frequently asked questions
- What ZIP codes are in Old Greenwich, CT?
- 06870. A ZIP code is listed for Old Greenwich when at least 10% of its land lies inside the Old Greenwich Census-designated place, when it holds at least 10% of the place's land, or when its USPS mailing city is Old Greenwich.
- What is the population of Old Greenwich, CT?
- The Census Bureau counts 6,936 residents inside Old Greenwich Census-designated place (ACS 2020–2024). The 1 ZIP code that serve Old Greenwich hold 7,864 residents in all.
- What is the median household income in Old Greenwich, CT?
- $250,001 inside Old Greenwich Census-designated place, per the Census Bureau. Across its ZIP codes the medians run from $250,001 to $250,000+.
- How many carrier routes and mailboxes are in Old Greenwich, CT?
- For the 1 of 1 ZIP codes in EDDM2GO's stored route library: 9 carrier routes reaching 2,794 residential and 208 business mailboxes.
This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.