Below is a list of Old Lyme CT zip codes. For your research we have also included Old Lyme Area Code, Time Zone, UTC and the local New London County FIPS Code. Each Old Lyme Connecticut zip code has a center Longitude / Latitude point (the Old Lyme center is -72.336898803711 / 41.313598632812). For your convenience we have also indicated if that zip code in Old Lyme observes Daylight Savings time.