Mount Morris’ post office opened in 1818, and 46% of its homes were built before 1940
More historic than 97% of U.S. towns · #95 of 758 in New York. What drives it
12 places in town are on the National Register, among them four historic districts with 81 buildings between them. Below: 2 old photos and papers, maps from 1885 on, and the census since 1820.
From Mount Morris’ archive · credits on each photo
Quick answers
How Mount Morris began
When was Mount Morris founded?
1818
The Mount Morris post office opened in 1818, the earliest record of the town by name. Five smaller post offices, River Road Forks (1828), Tuscarora (1828) and Brooks Grove (1831), opened inside today’s town and later closed.
First census: 1,002 in 18202020 census: 4,435208 years
How historic is Mount Morris?
A+
More historic than 97% of U.S. towns, on its age, its old homes and the National Register.
Founding year: the first Mount Morris post office (Blevins & Helbock, CC0).The full story ↓
History grade
What drives Mount Morris’ History grade
On its age, its old homes and the National Register, Mount Morris is more historic than 97% of U.S. towns, #95 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 age lowest.
A+
HistoryA character grade: shown, never part of Mount Morris’ 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 Mount Morris’ 209 sits above most of its state (83% of New York towns have fewer) while its 91 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 A to A+. The pre-1940 share is a Census survey estimate (±8.5 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 Mount Morris’ 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
Mount Morris’s post office has been open since 1818. Five other post offices opened and closed inside today’s town.
Mount Morris
1818–today
River Road Forks
1828–1858
Tuscarora
1828–1988
Brooks Grove
1831–1902
Ridge
1839–1902
Saint Helena
1840–1841
18101920today
Hamlets and corners on the map
Brooks GroveLetchworth Estates Mobile Home CommunityLombardo Mobile Home CommunityParkway Mobile Home ParkRidgeShaker CrossingTony's Mobile Home ParkTuscarora
Gone or out of use
Mount Morris Hospitalhospital
6cemeteries and burying grounds inside Mount Morris
Fire insurance maps drew every building, what it was made of and what it was used for, so insurers could price the risk of fire. Pick a year, then a sheet.
The region was first settled by Europeans circa 1784. It was first known as "Allens Hill", then as "Richmond Hill". The town was formed from the town of Leicester in 1818. The former Genesee Valley Canal passed through the town.
In 1952 Mount Morris Dam was finished on the Genesee River for flood control.
Passages that mention Mount Morris, cut from the printed page as they were published.
History of Livingston County, New York, from its earliest traditions to the present1905 · page 357Read the page →
Read the text
it met with delays, disappointments and embarrassments, and the enterprise was finally wholly abandoned. Subsequently the Genesee Valley Railroad Company built a line from Rochester to Avon, finishing it in 1854; the Avon, Geneseo and Mount Morris Railroad Company extended the line to Mount Morris, opening the road to the public in 185"); and forty years after Dansville celebrated the chartering of her railroad company the cars entered that village for the first time the line having been extended by the Erie and Genesee A'al-
Text read by machine from the scan; it may contain errors.
A history of Livingston County, New York1876 · page 407Read the page →
Read the text
enterprise was finally wholly abandoned. Subsequently the Genesee Valley Railroad company built a line from Rochester to Avon, finishing it in 1854 ; the Avon, Geneseo and Mount Morris Railroad company extended the line to Mount Morris, opening the road to the public in 1859 ; and forty years after Dansville celebrated the chartering of her railroad company, the cars entered that village for the first time in the fall of
Text read by machine from the scan; it may contain errors.
History of Livingston County, New York, from its earliest traditions to the present1905Read the page →
Read the text
Mount Morris Board of Education, and twelve successive years as President of the Livingston County Historical Society, and was at the time of his death President of the Mills VVaterworks Company, and Railroad Commissioner of the town of Mount Morris. The system of waterworks, which has added more than any other enterprise to the welfare of the village, was constructed after plans submitted to the village trustees and the citizens of Mount Morris by Dr.
Text read by machine from the scan; it may contain errors.
A history of Livingston County, New York1876 · page 397Read the page →
Read the text
A large meeting of citizens of the whole town was held in the village of Mount Morris Jan. 11th, 1831, for the purpose of taking steps to oppose the efforts of those who were seeking a division of the town. William A. Mills was called to the chair, and W. H.
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
Mount Morris, 1818 to 1988
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 Mount Morris post office opened in 1818, the earliest record of the town by name (U.S. post office records).
How does Mount Morris rank for history?
Mount Morris is more historic than 97% of U.S. towns, #95 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 Mount Morris?
12 listings: 8 buildings, among them the Gen. William A. Mills House (listed 1978, the first), and 4 historic districts with 81 contributing buildings. 91 historic buildings in all.
How old are the homes in Mount Morris?
46% of Mount Morris’ homes were built before 1940 (Census estimate, ±8.5 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 (12), 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, Sanborn fire insurance maps (Library of Congress) 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.