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PA 120 eb entering Grove Twp., Aug. 2024Photo: Mr. Matté (if there is an issue with this image, contact me using this image's Commons talk page, my Commons user talk page, or my English Wikipedia user talk page; I'll know about it a lot faster) · CC BY-SA 4.0
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History · Sinnamahoning

Sinnamahoning’s post office opened in 1827, and 29% of its homes were built before 1940

Below: maps from 1945 on.

1827first post office
0on the National Register
29%homes built before 1940
Add an old photoShare a memory
Photo: Mr. Matté (if there is an issue with this image, contact me using this image's Commons talk page, my Commons user talk page, or my English Wikipedia user talk page; I'll know about it a lot faster) · CC BY-SA 4.0
Quick answers

How Sinnamahoning began

When was Sinnamahoning founded?

1827

The Sinnamahoning post office opened in 1827, the earliest record of the town by name.

199 years
Founding year: the first Sinnamahoning post office (Blevins & Helbock, CC0).

What stands out about Sinnamahoning’s 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 Sinnamahoning are in the public archives yet. The rest are in attics and albums.Deep rootsA post office since 1827: 199 years of Sinnamahoning.Old housesHalf of Sinnamahoning’s homes were built before 1960.
★ What stands out · Help out

Start Sinnamahoning’s collection

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

Decades since 1900 with photos
00s10s20s30s40s50s60s70s80s90s
0 of 10 decades. The empty ones are waiting for someone’s album.
Share a family photoSign in to add one+10
The story so far

Sinnamahoning, in brief

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

Sinnemahoning, also known as Sinnamahoning, is an unincorporated community in Cameron County, Pennsylvania, United States. The community is located along Sinnemahoning Creek and Pennsylvania Route 120, 2.4 miles (3.9 km) southeast of Driftwood. Sinnemahoning has a post office with ZIP code 15861.

Its first post office opened in 1827.

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

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.

Be the first to add onePhotograph a print flat, in daylight, no flash.
Add from your album
On the map

Sinnamahoning on the map, 1945 to 1971

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

Sinnamahoning on the 1945 USGS mapSinnamahoning on the 1971 USGS map1945Sinnemahoning sheet · 1:24,000

U.S. Geological Survey historical topographic maps (public domain), via Esri’s collection of the scans. The red ring marks the center of Sinnamahoning.

Famous people

Famous people close to Sinnamahoning

Nobody well known was born in Sinnamahoning itself, so here are the best known from just nearby.

See all →
Joseph T. McNarneyUnited States Army general · b. 1893
John RoachAmerican baseball player · b. 1867
L
Lee GambleAmerican baseball player · b. 1910
Mike RoachAmerican baseball player · b. 1869
Bill FrielAmerican baseball player · b. 1876
Garrett CochranAmerican football player · b. 1876

Questions about Sinnamahoning’s history

What year was Sinnamahoning founded?

The Sinnamahoning post office opened in 1827, 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 →
Start a conversation
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 U.S. Geological Survey historical maps. Archive images are copied here with their credits and licenses, shown on each photo’s page. Refreshed monthly.