On its age, its old homes and the National Register, Washington Township is more historic than 56% of U.S. towns. 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 Washington 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 Washington 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 (±8.8 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 Washington Township’s past
Read from the archive, the National Register and the record. The page puts what stands out first.
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.
Every edition of the U.S. Geological Survey’s map of Washington Township. Tap a year, or press play to watch the town change.
1910Hilliards 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 so far
Washington Township, in brief
Wikipedia doesn’t have a history of Washington Township yet. The photos, dates and memories neighbors add here are how it gets written.
Washington Township is a township that is located in Butler County, Pennsylvania, United States. The population was 1,287 at the time of the 2020 census.
Its population held steady between the last two censuses: 1,300 in 2010, 1,288 in 2020.
Intro from Wikipedia. Population: U.S. Census Bureau.
From the old history books
What they wrote about Washington Township in 1927
Passages that mention Washington Township, cut from the printed page as they were published.
History of Butler County Pennsylvania1927 · page 554Read the page →
Read the text
Hilliards, formerly called Hilliard Station, or Hilliards Mills, is one of the earliest settlements in Washington Township. Jacob Hilliard settled on a stream known as Hilliards Run in 1802, and his son, John Hilliard, built a grist-mill there which was conducted for many years. Until recent years the remains of the old dam could be seen.
Text read by machine from the scan; it may contain errors.
History of Butler County Pennsylvania1927 · page 545Read the page →
Read the text
Benjamin Fletcher erected his log grist-mill at Martinsburg (now Bruin), he was looked on almost as a public benefactor. Several years later, John Shryock established a mill on Silver Creek, not far from the Washington Township line, and in 1824 William Turner built a grist mill on the north branch of Beaver Creek. Other mills were erected, and manufacturing and milling were important industries along the numerous streams long before the aggregation of houses at any one point was more than a log settlement. The Harvey
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
Washington Township, 1876 to 1957
Woven from the archive, old maps, post office records, the National Register and the people born here.
Washington Township is more historic than 56% 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.
How old are the homes in Washington Township?
28% of Washington Township’s homes were built before 1940 (Census estimate, ±8.8 points), against a typical 18% for a Pennsylvania town; the median home was built in 1967.
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 Library of Congress (18), 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.