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A−History
History · St. Thomas Township

St. Thomas Township’s post office opened in 1824, and 13% of its homes were built before 1940

More historic than 81% of U.S. towns · #312 of 1,035 in Pennsylvania. What drives it

3 places in town are on the National Register, among them a historic district with 5 buildings. Below: maps from 1900 on and the census since 2000.

1824first post office
3on the National Register
13%homes built before 1940
Quick answers

How St. Thomas Township began

When was St. Thomas Township founded?

1824

The St. Thomas Township post office opened in 1824, the earliest record of the town by name. Two smaller post offices, Stone Bridge (1873) and Edenville (1882), opened inside today’s town and later closed.

First census: 5,775 in 20002020 census: 5,917202 years

How historic is St. Thomas Township?

A−

More historic than 81% of U.S. towns, on its age, its old homes and the National Register.

What drives the grade ↓
Founding year: the first St. Thomas Township post office (Blevins & Helbock, CC0).The full story ↓
History grade

What drives St. Thomas Township’s History grade

On its age, its old homes and the National Register, St. Thomas Township is more historic than 81% of U.S. towns, #312 of 1,035 in Pennsylvania. All 3 inputs are above most U.S. towns; its National Register listings ranks highest and its share of homes from before 1940 lowest.

A−
HistoryA character grade: shown, never part of St. Thomas Township’s overall grade.
All U.S. towns we grade (21,289)Ahead of 81%
NewerOlder
Pennsylvania towns of 2,500+ (1,035)Ahead of 70%

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 St. Thomas Township’s 13.4 sits above most of its state (80% of Pennsylvania towns have fewer) while its 8 historic buildings outnumber those of 74% of U.S. towns.

How sure. Graded on any two of the three inputs instead, the letter would range from B+ to A−. The pre-1940 share is a Census survey estimate (±8.2 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 St. Thomas 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 St. Thomas Township’s collection

The first neighbors to add old photos shape how St. Thomas 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, places now gone and burying grounds

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

Saint Thomas
1824–today
Williamson
1872–today
Stone Bridge
1873–1875
Edenville
1882–1934
18201920today
Hamlets and corners on the map
Carlton HeightsEdenvilleFranklin FurnaceSaint ThomasWilliamson
Gone or out of use
Millers Milllocale
14cemeteries and burying grounds inside St. Thomas Township
Brandts ChurchBrindleCoble FamilyCrider Family FarmCridersEdenville Methodist ChurchOver FamilyPlum - Schneider FarmSaint ThomasSaint Thomas LutheranSaint Thomas Methodist EpiscopalSaint Thomas United Brethren ChurchTrinity United Church of ChristZion United Brethren

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

On the map

St. Thomas Township on the map, 1900 to 1990

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

St. Thomas Township on the 1900 USGS mapSt. Thomas Township on the 1944 USGS mapSt. Thomas Township on the 1968 USGS mapSt. Thomas Township on the 1973 USGS mapSt. Thomas Township on the 1990 USGS map1900Mercersburg 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 St. Thomas Township.

The story

How St. Thomas Township came to be

From Wikipedia’s history of St. Thomas Township.

Read it all →

The Franklin Furnace Historic District, Chambersburg and Bedford Turnpike Road Company Toll House, and Woodland are listed on the National Register of Historic Places.

Text from Wikipedia, licensed CC BY-SA 4.0.

From the old history books

What they wrote about St. Thomas Township in 1887

Passages that mention St. Thomas Township, cut from the printed page as they were published.

A. G. Stark in commanding the company till the campaign was over. He came back to his father's home and remained a short time. In 1865 he went to Waynesboro, learned the blacksmith's trade, and worked two years with Wash McGinly. He then came to St. Thomas Township, and lived with his father until …
History of Franklin county, Pennsylvania1887 · page 900Read the page →
Read the text

A. G. Stark in commanding the company till the campaign was over. He came back to his father's home and remained a short time. In 1865 he went to Waynesboro, learned the blacksmith's trade, and worked two years with Wash McGinly. He then came to St. Thomas Township, and lived with his father until the spring of 1869, when he moved to Charles Gillan' s hotel and worked at blacksmithing three years. He then moved his family to Five Forks, went to Altoona and worked in the railroad shop five months. November 7, 1872, he moved to St. Thomas, bought property and two lots, and has since lived

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

St. Thomas Township, 1824 to 1900

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

  1. 19th century
  2. 1824Post officeThe Saint Thomas post office opens
  3. 1872Post officeThe Williamson post office opens
  4. 1873Post officeThe Stone Bridge post office opens
  5. 1875Post officeThe Stone Bridge post office closes
  6. 20th century
  7. 1900On the mapFirst mapped by the U.S. Geological Survey
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

3 historic places in St. Thomas Township

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

places listed
3
National Historic Landmarks
0
none yet
historic buildings protected
8
each building in a district counts
first listed
1973
Woodland

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

People over time

St. Thomas Township, census by census

05001,0001,5002,0002,5003,0003,5004,0004,5005,0005,5006,0006,50020002020Peak: 5,935

Between 5,775 and 5,935 people in every census since 2000.

3 censuses, 2000–2020.

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

Famous people

Famous people close to St. Thomas Township

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

See all →
Stories next door

History across the town line

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

Questions about St. Thomas Township’s history

What year was St. Thomas Township founded?

The St. Thomas Township post office opened in 1824, the earliest record of the town by name (U.S. post office records).

How does St. Thomas Township rank for history?

St. Thomas Township is more historic than 81% of U.S. towns, #312 of 1,035 in Pennsylvania. 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 St. Thomas Township?

Three places: the Woodland (listed 1973), the Chambersburg and Bedford Turnpike Road Company Toll House (1978) and the Franklin Furnace Historic District (1991).

How old are the homes in St. Thomas Township?

13% of St. Thomas Township’s homes were built before 1940 (Census estimate, ±8.2 points), against a typical 18% for a Pennsylvania town; the median home was built in 1976.

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 (3), Wikipedia, 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 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.