| Official Zip Code Name | Old Lyme |
| Zip Code State | Connecticut |
| Primary County: | New London |
| Area Code | 860/959 |
| Current Population: | 37081 |
| Racial Majority: | White 62.49% |
| Median Household Income | $55618 |
| Average Adjusted Gross Income | $89060 |
| Time Zone: | 5 |
| Elevation Range | 211 ft. |
| Area | 53.999 Sqm. |
| Coordinates(Y,X) | 41.359226, -72.341172 |