2 places in town are on the National Register, among them a historic district with 2 buildings. Below: 1 old photo or paper, maps from 1904 on, and the census since 1790.
The Sedgwick post office opened in 1812, the earliest record of the town by name. Another post office, North Sedgwick (1851), opened inside today’s town and later closed.
First census: 569 in 17902020 census: 1,202214 years
How historic is Sedgwick?
A
More historic than 88% of U.S. towns, on its age, its old homes and the National Register.
Founding year: the first Sedgwick post office (Blevins & Helbock, CC0).The full story ↓
History grade
What drives Sedgwick’s History grade
On its age, its old homes and the National Register, Sedgwick is more historic than 88% of U.S. towns. All 3 inputs are above most U.S. towns; its share of homes from before 1940 ranks highest and its National Register listings lowest.
A
HistoryA character grade: shown, never part of Sedgwick’s overall grade.
Maine towns list more on the Register than most of the country (a typical Maine town has 15.9 per 10,000 residents, the U.S. 2.4), so Sedgwick’s 23.5 sits near the middle of its state (62% of Maine towns have fewer) while its 3 historic buildings outnumber those of 65% of U.S. towns.
How sure. Graded on any two of the three inputs instead, the letter would range from A− to A. The pre-1940 share is a Census survey estimate (±10.3 points). 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 Sedgwick’s past
Read from the archive, the National Register and the record. The page puts what stands out first.
It was one of six contiguous townships, each six miles square, granted by Massachusetts in 1761 to David Marsh and 359 others. Called by its Abenaki name Naskeag, meaning "the end or extremity," its first permanent European settler was Andrew Black in 1759. In 1789, the town was incorporated as Sedgwick, named after Major Robert Sedgwick, who in 1654 captured nearby Fort Pentagouet (now Castine) from the French.
In 1817, land was taken from the township to form Brooksville, with more taken in 1849 to form Brooklin. By 1859, the population was 1,235.
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 Sedgwick post office opened in 1812, the earliest record of the town by name (U.S. post office records).
How does Sedgwick rank for history?
Sedgwick is more historic than 88% of U.S. towns. 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 Sedgwick?
Two places: the First Baptist Church (listed 1973) and the Sedgwick Historic District (1995).
How old are the homes in Sedgwick?
33% of Sedgwick’s homes were built before 1940 (Census estimate, ±10.3 points), against a typical 19% for a Maine town; the median home was built in 1982.
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 (5), the National Register of Historic Places (2), 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.