The Philadelphia Township post office opened in 1882, the earliest record of the town by name. Two smaller post offices, Lancaster (1837) and Philadelphia (1882), opened inside today’s town and later closed.
2020 census: 208144 years
Founding year: the first Philadelphia Township post office (Blevins & Helbock, CC0).
What stands out about Philadelphia 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
Two other post offices opened and closed inside today’s town.
Lancaster
1837–1882
Philadelphia
1882–1961
18301930today
Hamlets and corners on the map
BurlingameOld PrincetonPhiladelphia
Gone or out of use
Bailey SchoolschoolCentenary ChurchchurchEckman ChapelchurchGarner ChapelchurchGeorge Washington SchoolschoolHarmony SchoolschoolPanther Grove SchoolschoolSugar Grove SchoolschoolWalnut Grove Schoolschool
9cemeteries and burying grounds inside Philadelphia Township
US Post Offices dataset (Blevins & Helbock, CC0). Places and cemeteries from the USGS Geographic Names Information System (2021).
The story so far
Philadelphia Township, in brief
Wikipedia doesn’t have a history of Philadelphia Township yet. The photos, dates and memories neighbors add here are how it gets written.
Philadelphia is an unincorporated community in Cass County, Illinois, United States. Philadelphia is located on Illinois Route 125, southeast of Virginia. Vernon Huber, the 36th Governor of American Samoa, was born in Philadelphia. The community was named for Philadelphia, Pennsylvania.
Its first post office opened in 1882. Between the 2010 and 2020 censuses its population fell from 221 to 208 (-6%).
Intro from Wikipedia. Population: U.S. Census Bureau.
Timeline
Philadelphia Township, 1837 to 1961
Woven from the archive, old maps, post office records, the National Register and the people born here.
Every edition of the U.S. Geological Survey’s map of Philadelphia Township. Tap a year, or press play to watch the town change.
1932Virginia 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 Philadelphia Township.
On the National Register
1 historic place in Philadelphia Township
The country’s official list of buildings and places worth saving.
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). How TownRatings grades history →
From the National Register of Historic Places (1), Wikidata and Wikipedia for famous people, U.S. Geological Survey historical maps, 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.