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C+History
History · Summit Township

16% of Summit Township’s homes were built before 1940

More historic than 38% of U.S. towns · #874 of 1,035 in Pennsylvania. What drives it

Below: maps from 1909 on and old-book passages.

0on the National Register
16%homes built before 1940
Photo: Nyttend · Public domain
Quick answers

About Summit Township’s history

How historic is Summit Township?

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More historic than 38% of U.S. towns, on its age, its old homes and the National Register.

What drives the grade ↓
History grade

What drives Summit Township’s History grade

On its age, its old homes and the National Register, Summit Township is more historic than 38% of U.S. towns, #874 of 1,035 in Pennsylvania. Its share of homes from before 1940 holds the grade up; its National Register listings pull it down.

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HistoryA character grade: shown, never part of Summit Township’s overall grade.
All U.S. towns we grade (21,289)Ahead of 38%
NewerOlder
Pennsylvania towns of 2,500+ (1,035)Ahead of 16%

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 Summit Township’s 0.0 sits below most of its state (25% of Pennsylvania towns have fewer) while its 0 listings outnumber those of 23% 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 (±7.4 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 Summit 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 Summit Township’s collection

The first neighbors to add old photos shape how Summit 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

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

Bonnie Brook
1869–1875
Herman
1873–today
Carbon Center
1874–1917
18601940today
Hamlets and corners on the map
Bonnie BrookBrinkerCarbon CenterHermanVogleyvilleWadsworth
4cemeteries and burying grounds inside Summit Township
B'nai AbrahamGruenwaltSaint MarysSaint Michael

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

On the map

Summit Township on the map, 1909 to 1969

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

Summit Township on the 1909 USGS mapSummit Township on the 1911 USGS mapSummit Township on the 1958 USGS mapSummit Township on the 1969 USGS map1909Butler 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 Summit Township.

The story so far

Summit Township, in brief

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

Summit Township is a township that is located in Butler County, Pennsylvania, United States. The population was 4,503 at the time of the 2020 census.

Between the 2010 and 2020 censuses its population fell from 4,884 to 4,504 (-8%).

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

From the old history books

What they wrote about Summit Township in 1927

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

The leading village of Summit Township is Herman Station, which is the successor of Bonny Brook, the first settlement in Summit Township. The name given when the post office was first established was Brinker’s Mills, Bonny Brook being accepted as the name in 1868.
History of Butler County Pennsylvania1927 · page 550Read the page →
Read the text

The leading village of Summit Township is Herman Station, which is the successor of Bonny Brook, the first settlement in Summit Township. The name given when the post office was first established was Brinker’s Mills, Bonny Brook being accepted as the name in 1868.

Text read by machine from the scan; it may contain errors.
Summit Township is the home of a body of Capuchin priests and the magnificent structures which crown the heights above Herman Station, represent their monastery and college and church of St.
History of Butler County Pennsylvania1927 · page 551Read the page →
Read the text

Summit Township is the home of a body of Capuchin priests and the magnificent structures which crown the heights above Herman Station, represent their monastery and college and church of St.

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

Summit Township, 1869 to 1917

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

  1. 19th century
  2. 1869Post officeThe Bonnie Brook post office opens
  3. 1873Post officeThe Herman post office opens
  4. 1874Post officeThe Carbon Center post office opens
  5. 1875Post officeThe Bonnie Brook post office closes
  6. 20th century
  7. 1909On the mapFirst mapped by the U.S. Geological Survey
  8. 1917Post officeThe Carbon Center post office closes
By decade

Summit Township, decade by decade

Famous people

Famous people close to Summit Township

Nobody well known was born in Summit 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 Summit Township’s history

How does Summit Township rank for history?

Summit Township is more historic than 38% of U.S. towns, #874 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.

How old are the homes in Summit Township?

16% of Summit Township’s homes were built before 1940 (Census estimate, ±7.4 points), against a typical 18% for a Pennsylvania town; the median home was built in 1967.

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 Wikimedia Commons (2), U.S. Geological Survey historical maps, 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.