Old Lyme is a town in New London County, Connecticut, home to about 4,273 people across 23 square miles. Its ZIP code is 06376, and parts of 06371 are in Old Lyme too.
Homes sold for a median of $372 per square foot in the three months ending August 2026, a seller’s market.
All in Old Lyme
Mostly Lyme; part is in Old Lyme
Each card is that ZIP code’s whole market, including any part outside Old Lyme. Seller’s market: under 4 months of supply; buyer’s market: over 6. Methodology
We’re writing up Old Lyme’s story and what everyday life there is like, for people thinking about moving in.
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| Nearest major airport | Bradley International Airport (BDL)46 miles away |
|---|---|
| Closer regional airport | Westerly State Airport (WST)26 miles away |
| Nearest city of 250,000+ | Boston, MA96 miles away |
| Nearest city of 1 million+ | New York, NY97 miles away |
Straight-line distances from the center of Old Lyme; driving is longer.
Source: Airports from OurAirports (scheduled passenger service); city centers and populations from the U.S. Census Bureau.
Source: Members of Congress from the congress-legislators project; districts from the Census Bureau’s relationship files; governor and mayor from Wikidata.
Old Lyme had 7,628 residents in the 2020 census, up 3% since 2000.
It’s the 138th largest of 169 towns in Connecticut by population.
New London County grew from 82,758 residents in 1900 to 268,555 in 2020.
New London County, 1900–2020
Source: U.S. Census Bureau decennial censuses (counties 1900–1990 from the Bureau’s historical county file).
Average highs peak around 80°F in summer, and winter lows average 23°F. About 39.2 inches of rain and melted snow fall in a typical year.
Source: NOAA 1991–2020 climate normals, Groton New London Ap, CT weather station (13 miles away).
Nearest hospitals
Source: Hospitals from CMS Hospital General Information (ratings are CMS overall star ratings); straight-line distances.
Parks (9 nearby)
Grocery stores (1 nearby)
Pharmacies
Libraries (1 nearby)
Museums (4 nearby)
Theaters and performance venues
Counts are within about 3.5 miles of the center of town.
Source: Map data © OpenStreetMap contributors (openstreetmap.org/copyright), as mapped by volunteers; it can miss places or include closed ones.
Public schools here are run by Regional School District 18. Check each district’s attendance zones for a specific address.
| School | Grades | Students | Type | Distance |
|---|---|---|---|---|
| Center SchoolOld Lyme | Pre-K | 80 | Special Education | 1.6 mi |
| Mile Creek SchoolOld Lyme | K–5 | 334 | Public | 3.0 mi |
| Lyme-Old Lyme Middle SchoolOld Lyme | 6–8 | 271 | Public | 1.5 mi |
| Lyme-Old Lyme High SchoolOld Lyme | 9–12 | 367 | Public | 1.4 mi |
Source: U.S. Department of Education, NCES: Common Core of Data (2024-2025) for public schools. Listed by address; we don’t rate schools.
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Shares ZIP codes with Lyme.
Town boundaries don’t always match ZIP codes: a ZIP code can cross into neighboring towns, and a town can share a ZIP code with its neighbors. Facts describe the town itself; market figures describe whole ZIP codes.