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History · Mount Morris

Mount Morris’ post office opened in 1822, and 30% of its homes were built before 1940

Below: maps from 1904 on and old-book passages.

1822first post office
0on the National Register
30%homes built before 1940
1famous people
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Quick answers

How Mount Morris began

When was Mount Morris founded?

1822

The Mount Morris post office opened in 1822, the earliest record of the town by name.

2020 census: 645204 years
Founding year: the first Mount Morris post office (Blevins & Helbock, CC0).

What stands out about Mount Morris’ past

Read from the archive, the National Register and the record. The page puts what stands out first.

A history waiting to be writtenNo old photos of Mount Morris are in the public archives yet. The rest are in attics and albums.On the map since 19045 editions of the USGS map, 1904 to 1997. Watch Mount Morris change.Deep rootsA post office since 1822: 204 years of Mount Morris.Old housesHalf of Mount Morris’ homes were built before 1958.
★ What stands out · Help out

Start Mount Morris’s collection

The first neighbors to add old photos shape how Mount Morris’s history is told.

Decades since 1900 with photos
00s10s20s30s40s50s60s70s80s90s
0 of 10 decades. The empty ones are waiting for someone’s album.
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On the map

Mount Morris on the map, 1904 to 1997

Every edition of the U.S. Geological Survey’s map of Mount Morris. Tap a year, or press play to watch the town change.

Mount Morris on the 1904 USGS mapMount Morris on the 1923 USGS mapMount Morris on the 1958 USGS mapMount Morris on the 1976 USGS mapMount Morris on the 1997 USGS map1904Blacksville 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 Mount Morris.

The story so far

Mount Morris, in brief

Wikipedia doesn’t have a history of Mount Morris yet. The photos, dates and memories neighbors add here are how it gets written.

Mount Morris is an unincorporated community and census-designated place (CDP) in Greene County, Pennsylvania, United States. It is located in Perry Township, near I-79. As of the 2010 census, the population was 737.

Its first post office opened in 1822. Between the 2010 and 2020 censuses its population fell from 737 to 645 (-12%).

Intro from Wikipedia. Population: U.S. Census Bureau.

From the old history books

What they wrote about Mount Morris in 1888

Passages that mention Mount Morris, cut from the printed page as they were published.

At the southeast corner of the township, on the right bank of Dunkard Creek, bordered by towering hills, is the pleasant village of Mount Morris. It is regularly laid out, and has an air of prosperity, though its growth has for some time been impeded by a number of causes wliicli now fortunately se…
History of Greene County, Pennsylvania,1888 · page 533Read the page →
Read the text

At the southeast corner of the township, on the right bank of Dunkard Creek, bordered by towering hills, is the pleasant village of Mount Morris. It is regularly laid out, and has an air of prosperity, though its growth has for some time been impeded by a number of causes wliicli now fortunately seem to be passing away, and an era of prosperity appears to be opening before it. The village has always been noted for the intelligence and pul)lic spirit of its people, and here was established one of the earliest graded schools in the 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.

By decade

No old photos in the archives yet

Weddings on Main Street, storms, parades, school pictures, the old store. If it’s in your family album, it belongs here.

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Questions about Mount Morris’ history

What year was Mount Morris founded?

The Mount Morris post office opened in 1822, the earliest record of the town by name (U.S. post office records).

Memory lane

What the archives can’t tell you, neighbors can.

Town Square →
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Sources

Where this page comes from

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). How TownRatings grades history →

From Wikidata and Wikipedia for famous people, U.S. Geological Survey historical maps 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.