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AHistory
History · Mahoning Township

37% of Mahoning Township’s homes were built before 1940

More historic than 93% of U.S. towns. What drives it

Its Register listings are the Bridge between Madison and Mahoning Townships and the Colwell Cut Viaduct. Below: maps from 1901 on.

2on the National Register
37%homes built before 1940
Quick answers

About Mahoning Township’s history

How historic is Mahoning Township?

A

More historic than 93% of U.S. towns, on its age, its old homes and the National Register.

What drives the grade ↓
History grade

What drives Mahoning Township’s History grade

On its age, its old homes and the National Register, Mahoning Township is more historic than 93% of U.S. towns. All 2 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 Mahoning Township’s overall grade.
All U.S. towns we grade (21,289)Ahead of 93%
NewerOlder

Pennsylvania towns list about as much on the Register as the country (a typical Pennsylvania town has 2.1 per 10,000 residents, the U.S. 2.4), so Mahoning Township’s 16.2 sits above most of its state (81% of Pennsylvania towns have fewer) while its 2 listings outnumber those of 60% of U.S. towns.

How sure. Graded on two of the three inputs, so a change in either one moves the letter more than it would with three. The pre-1940 share is a Census survey estimate (±6.7 points).

Founding year: our sources. 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 Mahoning Township’s past

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

★ What stands out · Help out

Start Mahoning Township’s collection

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

Decades since 1900 with photos
00s10s20s30s40s50s60s70s80s90s
0 of 10 decades. The empty ones are waiting for someone’s album.
Places that used to be

Lost post offices, old corners and burying grounds

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

Oakland
1841–1907
Putneyville
1844–1970
Mahoning Furnace
1877–1886
Seminole
1912–today
Distant
1917–today
Climax
1944–today
18401930today
Hamlets and corners on the map
ClimaxDistantMahoning FurnacePutneyvilleSeminole
8cemeteries and burying grounds inside Mahoning Township
ColwellDeanvilleMount ZionNarrowsOaklandPutneyvilleSaint Marks Lutheran ChurchSmullin

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

On the map

Mahoning Township on the map, 1901 to 1993

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

Mahoning Township on the 1901 USGS mapMahoning Township on the 1969 USGS mapMahoning Township on the 1973 USGS mapMahoning Township on the 1993 USGS map1901Rural Valley 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 Mahoning Township.

The story so far

Mahoning Township, in brief

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

Its population held steady between the last two censuses: 1,425 in 2010, 1,404 in 2020.

Timeline

Mahoning Township, 1841 to 1970

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

  1. 19th century
  2. 1841Post officeThe Oakland post office opens
  3. 1844Post officeThe Putneyville post office opens
  4. 1877Post officeThe Mahoning Furnace post office opens
  5. 1886Post officeThe Mahoning Furnace post office closes
  6. 20th century
  7. 1901On the mapFirst mapped by the U.S. Geological Survey
  8. 1907Post officeThe Oakland post office closes
  9. 1970Post officeThe Putneyville post office closes
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 National Register

2 historic places in Mahoning Township

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

places listed
2
National Historic Landmarks
0
none yet
historic buildings protected
2
each building in a district counts
first listed
1988
Bridge between Madison and Mahoning Townships

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

Stories next door

History across the town line

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

Questions about Mahoning Township’s history

How does Mahoning Township rank for history?

Mahoning Township is more historic than 93% of U.S. towns. 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 Mahoning Township?

Two places: the Bridge between Madison and Mahoning Townships (listed 1988) and the Colwell Cut Viaduct (1988).

How old are the homes in Mahoning Township?

37% of Mahoning Township’s homes were built before 1940 (Census estimate, ±6.7 points), against a typical 18% for a Pennsylvania town; the median home was built in 1948.

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).

From the National Register of Historic Places (2), U.S. Geological Survey historical maps, 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.