Plainville’s post office opened in 1830, and 4 of its places are on the National Register
More historic than 70% of U.S. towns · #117 of 155 in Connecticut. What drives it
Most of Plainville was built recently: 9% of its homes predate 1940 and the median home dates from 1971. 4 places in town are on the National Register, among them the Charles H. Norton House, a National Historic Landmark, and two historic districts with 91 buildings between them. Below: 13 old photos and papers, maps from 1892 on, and the census since 1870.
The Plainville post office opened in 1830, the earliest record of the town by name. Another post office, Linville (1875), opened inside today’s town and later closed.
First census: 1,433 in 1870196 years
How historic is Plainville?
B+
More historic than 70% of U.S. towns, on its age, its old homes and the National Register.
Founding year: the first Plainville post office (Blevins & Helbock, CC0).The full story ↓
History grade
What drives Plainville’s History grade
On its age, its old homes and the National Register, Plainville is more historic than 70% of U.S. towns, #117 of 155 in Connecticut. Its age holds the grade up; its share of homes from before 1940 pulls it down.
B+
HistoryA character grade: shown, never part of Plainville’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 Plainville’s 53.0 sits near the middle of its state (40% of Connecticut towns have fewer) while its 93 historic buildings outnumber those of 89% of U.S. towns.
How sure. Graded on any two of the three inputs instead, the letter would range from B to A−. The pre-1940 share (±2.6 points) is firm at this size. The founding year is the first post office, not a stated founding date.
Founding year: the first post office (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 Plainville’s past
Read from the archive, the National Register and the record. The page puts what stands out first.
Plainville first was inhabited by Europeans around 1650. By the 1660s, the land was incorporated as land for nearby Farmington. In the year 1869, it separated from Farmington due to the distance of the town center and the growth of Plainville downtown due to the installation of the New York, New Haven and Hartford Railroad and the Hartford, Providence, and Fishkill Railroad.
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.
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.
The Plainville post office opened in 1830, the earliest record of the town by name (U.S. post office records).
How does Plainville rank for history?
Plainville is more historic than 70% of U.S. towns, #117 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 Plainville?
4 listings: 2 buildings, among them the Charles H. Norton House (a National Historic Landmark since 1976), and 2 historic districts, the New Haven District Campground and the Farmington Canal-New Haven and Northampton Canal, with 91 contributing buildings. 93 historic buildings in all.
How old are the homes in Plainville?
9% of Plainville’s homes were built before 1940 (Census estimate, ±2.6 points), against a typical 15% for a Connecticut town; the median home was built in 1971.
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 (24), the National Register of Historic Places (4), Wikipedia, 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.