Horsham Township dates to 1682, and 3 of its places are on the National Register
More historic than 75% of U.S. towns · #401 of 1,035 in Pennsylvania. What drives it
Most of Horsham Township was built recently: 4% of its homes predate 1940 and the median home dates from 1980. Below: 2 old photos and papers, maps from 1893 on, and the census since 1990.
On its age, its old homes and the National Register, Horsham Township is more historic than 75% of U.S. towns, #401 of 1,035 in Pennsylvania. Its age holds the grade up; its share of homes from before 1940 pulls it down.
B+
HistoryA character grade: shown, never part of Horsham 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 Horsham Township’s 3.7 sits near the middle of its state (63% of Pennsylvania towns have fewer) while its 10 historic buildings outnumber those of 76% of U.S. towns.
NoteThe founding year comes from Wikidata alone; no second source gives 1682.
How sure. Graded on any two of the three inputs instead, the letter would range from B− to A. The pre-1940 share (±1.9 points) is firm at this size.
Founding year: Wikidata (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 Horsham Township’s past
Read from the archive, the National Register and the record. The page puts what stands out first.
Lost post offices, old corners, places now gone and burying grounds
Four other post offices opened and closed inside today’s town.
Horsham
1826–today
Prospectville
1854–1967
Davis Grove
1871–1905
Maple Glen
1892–1961
Hallowell
1901–1959
18201920today
Hamlets and corners on the map
Arbor GlenBlair Mill Village EastBlair Mill Village WestCarpenters WayClearbrook VillageCloverly FarmsDreshertowneEstates of Horsham LeaFairoaksHallowellHidden Creek EstatesHidden Creek Phase IIHorshamHorsham ChaseHorsham HeightsHorsham TerraceLeary Trace ParkMaple GlenMaple Glen HollowMeetinghouse VillageMyers TractProspectvilleSaw Mill ValleySquires Estates
Gone or out of use
Asplundh AirportairportGraemelocaleHorsham Township Police AirportairportHorsham Valley Golf Course AirportairportKeystone Helicopter Corp/Toll Brothers AirportairportMelville AirportairportPrudential Business Campus AirportairportTurner FieldairportWillow Grove Naval Air Station Joint Reserve Baseairport
3cemeteries and burying grounds inside Horsham Township
Horsham FriendsJames and Ann Murray Family Burial GroundsWhitemarsh Memorial Park
US Post Offices dataset (Blevins & Helbock, CC0). Places and cemeteries from the USGS Geographic Names Information System (2021).
Help out
Start Horsham Township’s collection
The first neighbors to add old photos shape how Horsham Township’s history is told.
Decades since 1900 with photos
00s10s20s30s40s50s60s70s80s90s
0 of 10 decades. The empty ones are waiting for someone’s album.
Every edition of the U.S. Geological Survey’s map of Horsham Township. Tap a year, or press play to watch the town change.
1893Germantown 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 Horsham Township.
The story so far
Horsham Township, in brief
Wikipedia doesn’t have a history of Horsham Township yet. The photos, dates and memories neighbors add here are how it gets written.
Horsham is a census-designated place in Horsham Township, Montgomery County, Pennsylvania, United States. The population was 15,193 at the 2020 census. It is home to the Biddle Air National Guard Base at the former site of Naval Air Station Joint Reserve Base Willow Grove, as well as the headquarters of Music Choice, a cable music provider. Horsham is coterminous with the ZIP Code 19044. It covers an area of 5.47 miles and is located 16 miles (26 km) north of Philadelphia.
Horsham Township was established in 1682. Its population held steady between the last two censuses: 26,147 in 2010, 26,564 in 2020.
Intro from Wikipedia. Population: U.S. Census Bureau.
Timeline
Horsham Township, 1682 to 1967
Woven from the archive, old maps, post office records, the National Register and the people born here.
In 1682, according to Wikidata. Horsham Township’s post office opened in 1826, and the census of 1990 counted 15,051 people here.
How does Horsham Township rank for history?
Horsham Township is more historic than 75% of U.S. towns, #401 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 Horsham Township?
Three places: the Graeme Park (listed 1966), the Horsham Friends Meeting (1991) and the Kenderdine Mill Complex (1992).
How old are the homes in Horsham Township?
4% of Horsham Township’s homes were built before 1940 (Census estimate, ±1.9 points), against a typical 18% for a Pennsylvania town; the median home was built in 1980.
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 (2), the National Register of Historic Places (3), U.S. Geological Survey historical maps, U.S. Census counts (via Wikipedia), 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.
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