Old Lyme dates to 1855, and 18% of its homes were built before 1940
More historic than 61% of U.S. towns · #135 of 155 in Connecticut. What drives it
5 places in town are on the National Register, among them the Florence Griswold House and Museum, a National Historic Landmark, and a historic district with 50 buildings. Below: 17 old photos and papers, maps from 1893 on, and the census since 1860.
On its age, its old homes and the National Register, Old Lyme is more historic than 61% of U.S. towns, #135 of 155 in Connecticut. Its National Register listings hold the grade up; its age pulls it down.
B
HistoryA character grade: shown, never part of Old Lyme’s overall grade.
Connecticut towns list more on the Register than most of the country (a typical Connecticut town has 73.3 per 10,000 residents, the U.S. 2.4), so Old Lyme’s 72.9 sits near the middle of its state (48% of Connecticut towns have fewer) while its 56 historic buildings outnumber those of 86% of U.S. towns.
NoteThe founding year comes from Wikidata alone; no second source gives 1855.
How sure. Graded on any two of the three inputs instead, the letter would range from B− to B+. The pre-1940 share is a Census survey estimate (±3.4 points).
Founding year: Wikidata (other dates in Quick answers). Homes: Census ACS 2020–24. National Register: National Park Service, May 2026 list; each listing counted once (boundary changes and added documentation belong to their listing), and a historic district counts its contributing buildings. How TownRatings grades history →
What stands out about Old Lyme’s past
Read from the archive, the National Register and the record. The page puts what stands out first.
US Post Offices dataset (Blevins & Helbock, CC0). Places and cemeteries from the USGS Geographic Names Information System (2021).
People over time
Old Lyme, census by census
Lost a third of its people between 1880 and 1920, then grew 8-fold.
17 censuses, 1860–2020.
U.S. Census Bureau decennial counts, from the census table on Old Lyme’s Wikipedia page.
On the map
Old Lyme on the map, 1893 to 1970
Every edition of the U.S. Geological Survey’s map of Old Lyme. Tap a year, or press play to watch the town change.
1893Saybrook sheet · 1:62,500
U.S. Geological Survey historical topographic maps (public domain), via Esri’s collection of the scans. The red ring marks the center of Old Lyme.
The story so far
Old Lyme, in brief
Wikipedia doesn’t have a history of Old Lyme yet. The photos, dates and memories neighbors add here are how it gets written.
Old Lyme is a coastal town in New London County, Connecticut, United States, bounded on the west by the Connecticut River, on the south by the Long Island Sound, on the east by the town of East Lyme, and on the north by the town of Lyme. The town is part of the Lower Connecticut River Valley Planning Region. The main street of the town, Lyme Street, is a historic district with several homes once owned by sea captains. The town has had for many years a thriving art community. Its principal institutions include the Florence Griswold Museum, the Lyme Art Association, and the Lyme Academy of Fine Arts. The town is named after Lyme Regis, England. Several seasonal beach communities are in Old Ly…
Old Lyme was established in 1855.
Intro from Wikipedia. Population: U.S. Census Bureau.
Timeline
Old Lyme, 1797 to 1997
Woven from the archive, old maps, post office records, the National Register and the people born here.
Nothing in the archives for these yearsWeddings on Main Street, storms, parades, school pictures, the old store. If it’s in your family album, it belongs here.
In 1855, according to Wikidata. Old Lyme’s post office opened in 1797, and the census of 1860 counted 1,304 people here.
How does Old Lyme rank for history?
Old Lyme is more historic than 61% of U.S. towns, #135 of 155 in Connecticut. The History grade combines the town’s founding era, the share of homes built before 1940 and its National Register listings. It’s a character grade, so it isn’t part of the overall grade. How it works.
What is on the National Register in Old Lyme?
5 listings: 3 buildings, among them the Florence Griswold House and Museum (a National Historic Landmark since 1993), 1 historic district, the Old Lyme Historic District, with 50 contributing buildings, and 1 site. 56 historic buildings in all.
How old are the homes in Old Lyme?
18% of Old Lyme’s homes were built before 1940 (Census estimate, ±3.4 points), against a typical 15% for a Connecticut town; the median home was built in 1965.
Founding dates: Wikidata, Wikipedia, the U.S. post office records of Blevins & Helbock (CC0) and the Census. Homes by year built: Census ACS 2020–24. National Register of Historic Places: National Park Service (list of May 22, 2026). Old photos, postcards and papers: Wikimedia Commons, the Library of Congress and other public archives, credited on each item’s page. Maps: U.S. Geological Survey historical topographic maps (via Esri) and Sanborn fire-insurance maps (Library of Congress). History text and census tables: Wikipedia (CC BY-SA 4.0). Places that used to be: USGS Geographic Names Information System (2021).
From Wikimedia Commons (12), the Library of Congress (5), the National Register of Historic Places (5), Wikidata and Wikipedia for famous people, U.S. Geological Survey historical maps, U.S. Census counts (via Wikipedia), the US Post Offices dataset (Blevins & Helbock) and the USGS Geographic Names Information System. Archive images are copied here with their credits and licenses, shown on each photo’s page. Refreshed monthly.