Postal reference / United States
06870Old Greenwich, Connecticut
ZIP code 06870 is a United States postal code for Old Greenwich, Connecticut. Its county association is Western Connecticut County. The map reference point is at 41.0354, -73.5673.
- State / territory
- Connecticut
- Recorded place name
- Old Greenwich
- County association
- Western Connecticut
- Estimated coordinate
- 41.0354, -73.5673
View on OpenStreetMap - ZIP prefix
- 068 · 44 ZIP codes share it
- Data source
- GeoNames postal reference, snapshot September 26, 2026
GeoNames reference data. County associations may not include every intersecting county, place names are postal names rather than legal boundaries, and coordinates are approximate. This is not address validation.
Area
- Land area
- 2.267 sq mi (2023 Census Gazetteer)
Figures are for the ZIP Code Tabulation Area (ZCTA) that most closely matches this ZIP code, not an exact match to USPS delivery boundaries. Source: U.S. Census Bureau, 2023 Gazetteer + 2023 ACS 5-Year Estimates, retrieved 2026-09-27. How to read this data.
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Browse the other 428 ZIP codes recorded for Connecticut, sorted by code with place and county.
Connecticut directoryNearby ZIP code reference points
| ZIP code | Place | State | County association | Miles |
|---|---|---|---|---|
| 06910 | Stamford | CT | Western Connecticut | 0.5 |
| 06878 | Riverside | CT | Western Connecticut | 0.7 |
| 06926 | Stamford | CT | Western Connecticut | 1.5 |
| 06921 | Stamford | CT | Western Connecticut | 1.8 |
| 06807 | Cos Cob | CT | Western Connecticut | 1.8 |
| 06901 | Stamford | CT | Western Connecticut | 1.9 |
| 06904 | Stamford | CT | Western Connecticut | 1.9 |
| 06911 | Stamford | CT | Western Connecticut | 1.9 |
Straight-line distance between reference points. Nearby points do not prove that ZIP areas touch.
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