Peaked at 1,414 in 1960; 748 people lived here in 2020.
11 censuses, 1920–2020.
U.S. Census Bureau decennial counts, from the census table on Chalfant’s Wikipedia page.
On the map
Chalfant on the map, 1904 to 1979
Every edition of the U.S. Geological Survey’s map of Chalfant. Tap a year, or press play to watch the town change.
1904Pittsburgh 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 Chalfant.
The story so far
Chalfant, in brief
Wikipedia doesn’t have a history of Chalfant yet. The photos, dates and memories neighbors add here are how it gets written.
Chalfant is a borough in Allegheny County, Pennsylvania, United States. The population was 748 at the 2020 census. The borough was named after the Chalfant family of early settlers.
Chalfant was established in 1901. Between the 2010 and 2020 censuses its population fell from 800 to 748 (-7%).
Intro from Wikipedia. Population: U.S. Census Bureau.
Timeline
Chalfant, 1901 to 1960
Woven from the archive, old maps, post office records, the National Register and the people born here.
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 Wikimedia Commons (3), U.S. Geological Survey historical maps, U.S. Census counts (via Wikipedia) 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.