Wikipedia doesn’t have a history of Winfield yet. The photos, dates and memories neighbors add here are how it gets written.
Winfield is a census-designated place located in Union Township, Union County in the state of Pennsylvania. The community is located in eastern Union County at the intersection of Pennsylvania Route 304 and U.S. Route 15, which is located along the shores of the West Branch Susquehanna River. As of the 2010 census the population was 900 residents.
Its first post office opened in 1851. Its population held steady between the last two censuses: 900 in 2010, 905 in 2020.
Intro from Wikipedia. Population: U.S. Census Bureau.
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). Archive images are copied here with their credits and licenses, shown on each photo’s page. Refreshed monthly.