On its age, its old homes and the National Register, Jefferson Township is more historic than 50% of U.S. towns, #745 of 1,035 in Pennsylvania. Its share of homes from before 1940 holds the grade up; its National Register listings pull it down.
B−
HistoryA character grade: shown, never part of Jefferson Township’s overall grade.
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 Jefferson 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 (±8.6 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 Jefferson Township’s past
Read from the archive, the National Register and the record. The page puts what stands out first.
5cemeteries and burying grounds inside Jefferson Township
Holy Trinity MonasteryJefferson CenterPapeSaint Luke LutheranSummit
US Post Offices dataset (Blevins & Helbock, CC0). Places and cemeteries from the USGS Geographic Names Information System (2021).
On the map
Jefferson Township on the map, 1909 to 1969
Every edition of the U.S. Geological Survey’s map of Jefferson Township. Tap a year, or press play to watch the town change.
1909Butler 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 Jefferson Township.
The story so far
Jefferson Township, in brief
Wikipedia doesn’t have a history of Jefferson Township yet. The photos, dates and memories neighbors add here are how it gets written.
Jefferson Township is a township in Butler County, Pennsylvania, United States. The population was 5,209 at the 2020 census.
Between the 2010 and 2020 censuses its population fell from 5,504 to 5,212 (-5%).
Intro from Wikipedia. Population: U.S. Census Bureau.
From the old history books
What they wrote about Jefferson Township, 1883–1927
Passages that mention Jefferson Township, cut from the printed page as they were published.
History of Butler County, Pennsylvania. With illustrations and biographical sketches of some of its prominent men and pioneers1883 · page 280Read the page →
Read the text
Jefferson Township is thus sitnateil: On the north is Stuumit; east, Winlield; south, Clinton; and west, Penn. The Butler Branch Railroad crosses the northeastern corner of Joft'erson, and has a station at the village of (Jreat Belt. Jefferson Township also includes the I)orough of Sasonbtu-g. a full history of which follows.
Text read by machine from the scan; it may contain errors.
History of Butler County Pennsylvania1927 · page 565Read the page →
Read the text
Saxonburg, in Jefferson Township, is in the center of a thriving community. It was founded by John A. Roebling, inventor of wire rope and designer of the Brooklyn bridge. For further information concerning Saxonburg the reader is referred to a former chapter of this book entitled, “Early History of Saxonburg.”
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
Jefferson Township, 1874 to 1935
Woven from the archive, old maps, post office records, the National Register and the people born here.
Nothing in the archives for these yearsWeddings on Main Street, storms, parades, school pictures, the old store. If it’s in your family album, it belongs here.
Jefferson Township is more historic than 50% of U.S. towns, #745 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 Jefferson Township?
23% of Jefferson Township’s homes were built before 1940 (Census estimate, ±8.6 points), against a typical 18% for a Pennsylvania town; the median home was built in 1982.
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 (3), Wikidata and Wikipedia for famous people, 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.