The Seneca post office opened in 1827, the earliest record of the town by name. Four smaller post offices, Flint Creek (1820), Halls Corners (1830) and Stanley Corners (1850), opened inside today’s town and later closed.
First census: 4,802 in 18202020 census: 2,644199 years
How historic is Seneca?
A
More historic than 93% of U.S. towns, on its age, its old homes and the National Register.
Founding year: the first Seneca post office (Blevins & Helbock, CC0).The full story ↓
History grade
What drives Seneca’s History grade
On its age, its old homes and the National Register, Seneca is more historic than 93% of U.S. towns, #193 of 758 in New York. 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 Seneca’s overall grade.
New York towns list more on the Register than most of the country (a typical New York town has 12.3 per 10,000 residents, the U.S. 2.4), so Seneca’s 38.1 sits near the middle of its state (65% of New York towns have fewer) while its 10 historic buildings outnumber those of 76% 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 (±7.6 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 Seneca’s past
Read from the archive, the National Register and the record. The page puts what stands out first.
Lost post offices, old corners, places now gone and burying grounds
Seneca had its own post office from 1827 to 1920. Four other post offices opened and closed inside today’s town.
Flint Creek
1820–1892
Seneca
1827–1920
Seneca Castle
1829–today
Halls Corners
1830–1910
Stanley Corners
1850–1873
Stanley
1873–today
Flint
1892–1913
Hall
1910–today
18201920today
Hamlets and corners on the map
FlintHallSeneca CastleStanley
Gone or out of use
Hansen Farms Landing StripairportSchool Number 12schoolSchool Number 2schoolSchool Number 4schoolSchool Number 5schoolSchool Number 7schoolSchool Number 8schoolSchool Number 9schoolStape Fieldairport
7cemeteries and burying grounds inside Seneca
ButcherLittle ChurchNew Number NineOld Number NineSaint TheresaSand HillWhitney
US Post Offices dataset (Blevins & Helbock, CC0). Places and cemeteries from the USGS Geographic Names Information System (2021).
On the map
Seneca on the map, 1902 to 1952
Every edition of the U.S. Geological Survey’s map of Seneca. Tap a year, or press play to watch the town change.
1902Phelps 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 Seneca.
People over time
Seneca, census by census
Peaked at 9,188 in 1870; 2,658 people lived here in 2020.
21 censuses, 1820–2020.
U.S. Census Bureau decennial counts, from the census table on Seneca’s Wikipedia page.
The region was the territory of the Seneca people, a nation of the Haudenosaunee, and the sites of many important villages are in the town or the surrounding area; Kanadaseaga is one.
The area was part of the Phelps and Gorham Purchase. Settlement commenced around 1790, the year after the county was formed. A "District of Seneca" was created judicially in 1789 at the time the county was established, but its extent and subdivisions are not clearly known.
In 1872, the northeast part of the town was used to form the Town of Geneva, taking with it most of the historic Seneca communities and sites.
The Levi Barden Cobblestone Farmhouse, Thomas Barron House, and Rippey Cobblestone Farmhouse are listed on the National Register of Historic Places.
Passages that mention Seneca, cut from the printed page as they were published.
... History of Seneca Co., New York, with illustrations descriptive of its scenery, palatial residences, public building ... and important manufactories ..1876 · page 46Read the page →
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venting Pauperism," on November 29, 1816, the plan was drawn and approved, and the first deposits made July 3, 1819. The fiist savings bank in Albany dates 1820 ; in Troy, 1823 ; in Brooklyn, 1827, and in BufTalo, 183(>. There is but one savings bank in the County of Seneca; it was authorized by act of incorporation passed April 18, 1861, and revived May 6, 1870, and is known as the Seneca Falls Savings Bank, with its office on the corner of Fall and State Streets, in the village of Seneca Falls. At a meeting of the Board of Trustees, on July 25, 1871, there wore present, George B. D.iniels, Vice-President; Lu Roy C. Par-
Text read by machine from the scan; it may contain errors.
... History of Seneca Co., New York, with illustrations descriptive of its scenery, palatial residences, public building ... and important manufactories ..1876Read the page →
Read the text
Incorporation of the Village. — On the 22d of April, 1831, "An Act to incorporate the village of Seneca Falls, in the County of Seneca,". was passed by the legislature, and on the first Monday in May following Ansel Bascom was choseu President of the new coqioration. A new charter pas.«ed tin- Legislature on Ajjril 24, 1837, and was adopted by the village. The amended charter provided for a President, three Trastees for each of the two wards, a Police Constable, and two Street Commissionei-s, the other officers being appointed by the Trustees. At the first election held under the new charter, on the fourth Monday in May, John L.
Text read by machine from the scan; it may contain errors.
A centennial biographical history of Seneca County, Ohio1902 · page 33Read the page →
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came to Ohio, settling at Osnaboirg, Stark county, where he followed the blacksmith's trade until 1844, when he came to Seneca county and purchased eighty acres of timber land in Seneca township. This he cleared and improved, and ten years later he bought a farm of one hundred acres four miles south of Tiffin, in Seneca township, whereon he erected a saw mill and engaged in the manufacture of lumber until his death, which occurred in 1872, when he was seventy years of age. He was a self made man and met with a fair degree of success in his undertak-
Text read by machine from the scan; it may contain errors.
A centennial biographical history of Seneca County, Ohio1902 · page 466Read the page →
Read the text
Among the leading and successful farmer citizens of Seneca county, Ohio, William H. Zeis has long been one of the representative men. Since 1883 he has been a resident of Seneca township and has been all his life identified with the interests of Seneca county.
Text read by machine from the scan; it may contain errors.
Scans and text from the Internet Archive. Books published in 1930 or earlier, which are in the public domain.
Timeline
Seneca, 1803 to 1920
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.
The Seneca post office opened in 1827, the earliest record of the town by name (U.S. post office records).
How does Seneca rank for history?
Seneca is more historic than 93% of U.S. towns, #193 of 758 in New York. 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 Seneca?
4 listings: 4 buildings, among them the Seneca Presbyterian Church (listed 1973, the first). 10 historic buildings in all.
How old are the homes in Seneca?
47% of Seneca’s homes were built before 1940 (Census estimate, ±7.6 points), against a typical 27% for a New York town; the median home was built in 1945.
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 (6), 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), the USGS Geographic Names Information System and old county and town histories (Internet Archive). Archive images are copied here with their credits and licenses, shown on each photo’s page. Refreshed monthly.
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