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Allegheny River Lock and Dam No. 8 widePhoto: Generic1139 · CC BY-SA 3.0
–Not graded
History · Washington Township

12% of Washington Township’s homes were built before 1940

Its Register listing is the Allegheny River Lock and Dam No.8. Below: maps from 1900 on and the census since 2000.

1on the National Register
12%homes built before 1940
Add an old photoShare a memory

What stands out about Washington Township’s past

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

Lost villages4 post offices opened and closed inside today’s Washington Township, and 6 old place names are still on the map.A history waiting to be writtenNo old photos of Washington Township are in the public archives yet. The rest are in attics and albums.On the map since 19004 editions of the USGS map, 1900 to 1993. Watch Washington Township change.
★ What stands out · Places that used to be

Lost post offices, old corners, places now gone and burying grounds

Four other post offices opened and closed inside today’s town.

Sherrett
1861–1913
Wattersonsville
1904–1928
Van Buren
1923–1924
Reesedale
1926–1941
18601940today
Hamlets and corners on the map
Frenchs CornersMorrows CornerReesedaleSherrettVan BurenWattersonville
Gone or out of use
Sherrat Post Officepost office
9cemeteries and burying grounds inside Washington Township
BowserBrush ValleyFairJohnLimestone Church of GodSaint Marks Lutheran ChurchSherrettToyWattersonville United Methodist

US Post Offices dataset (Blevins & Helbock, CC0). Places and cemeteries from the USGS Geographic Names Information System (2021).

Help out

Start Washington Township’s collection

The first neighbors to add old photos shape how Washington Township’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
On the map

Washington Township on the map, 1900 to 1993

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

Washington Township on the 1900 USGS mapWashington Township on the 1963 USGS mapWashington Township on the 1972 USGS mapWashington Township on the 1993 USGS map1900Kittanning 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 Washington Township.

The story

How Washington Township came to be

From Wikipedia’s history of Washington Township.

Read it all →

The Allegheny River Lock and Dam No. 8 and Allegheny River Lock and Dam No. 9 are listed on the National Register of Historic Places.

Washington Township appears in the 1876 Atlas of Armstrong County, Pennsylvania.

Text from Wikipedia, licensed CC BY-SA 4.0.

Timeline

Washington Township, 1861 to 1931

Woven from the archive, old maps, post office records, the National Register and the people born here.

  1. 19th century
  2. 1861Post officeThe Sherrett post office opens
  3. 20th century
  4. 1900On the mapFirst mapped by the U.S. Geological Survey
  5. 1904Post officeThe Wattersonsville post office opens
  6. 1913Post officeThe Sherrett post office closes
  7. 1923Post officeThe Van Buren post office opens
  8. 1924Post officeThe Van Buren post office closes
  9. 1928Post officeThe Wattersonsville post office closes
  10. 1931BuiltAllegheny River Lock and Dam No.8 is built
By decade

Washington Township, decade by decade

Today2 recent
Washington Township, Armstrong County, Pennsylvania, United States (2025-02-03-17-10-14 UMBRA-10)2025Washington Township, Armstrong County, Pennsylvania, …Allegheny River Lock and Dam No. 8 wide2013Allegheny River Lock and Dam No. 8 wide
On the National Register

1 historic place in Washington Township

The country’s official list of buildings and places worth saving.

place listed
1
National Historic Landmarks
0
none yet
historic buildings protected
3
each building in a district counts
first listed
2000
Allegheny River Lock and Dam No.8
Allegheny River Lock and Dam No.8, built 1931
Structures

Architectural styles listings

Late 19th and Early 20th Century Revival1
Allegheny River Lock and Dam No.8Late 19th and Early 20th Century Revival · Built 1931

National Park Service, National Register of Historic Places. Photos from Wikimedia Commons, credited on each place’s page.

People over time

Washington Township, census by census

02004006008001,00020002020Peak: 1,029

Between 898 and 1,029 people in every census since 2000.

3 censuses, 2000–2020.

U.S. Census Bureau decennial counts, from the census table on Washington Township’s Wikipedia page.

Famous people

Famous people close to Washington Township

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

See all →
Richard HartshorneAmerican Geographer · b. 1899
C
Charles HartshorneAmerican philosopher · b. 1897
George L. ShoupAmerican politician · b. 1836
T
Todd HollandAmerican director and producer · b. 1961
Jason AltmireAmerican politician · b. 1968
M
Margaret Reed LewisAmerican cell biologist · b. 1881
Stories next door

History across the town line

Each neighbor’s History grade, on the same three inputs.

Madison Township1 historic placenot graded: under 1,000 residents or part of its townPine TownshipIts storynot graded: under 1,000 residents or part of its townBoggs TownshipIts storynot graded: under 1,000 residents or part of its townBrady TownshipIts storynot graded: under 1,000 residents or part of its townMadison TownshipIts storyB+TempletonIts storynot graded: under 1,000 residents or part of its townSugarcreek Township1 historic placeBEast Franklin TownshipIts storyC

Questions about Washington Township’s history

What is on the National Register in Washington Township?

One place: the Allegheny River Lock and Dam No.8 (listed 2000).

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 Wikimedia Commons (2), Wikidata (2), the National Register of Historic Places (1), Wikipedia, 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.