The Frederick Township post office opened in 1887, the earliest record of the town by name. Another post office, Fredericksville (1846), opened inside today’s town and later closed.
2020 census: 152139 years
Founding year: the first Frederick Township post office (Blevins & Helbock, CC0).
What stands out about Frederick Township’s past
Read from the archive, the National Register and the record. The page puts what stands out first.
Wikipedia doesn’t have a history of Frederick Township yet. The photos, dates and memories neighbors add here are how it gets written.
Frederick is an unincorporated community in Schuyler County, Illinois, United States. Frederick is near the Illinois River, 4 miles (6.4 km) north of Beardstown. Frederick has a post office with ZIP code 62639.
Its first post office opened in 1887. Between the 2010 and 2020 censuses its population fell from 176 to 152 (-14%).
Intro from Wikipedia. Population: U.S. Census Bureau.
Timeline
Frederick Township, 1846 to 1926
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 Frederick Township. Tap a year, or press play to watch the town change.
1926Beardstown 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 Frederick Township.
Famous people
Famous people close to Frederick Township
Nobody well known was born in Frederick Township itself, so here are the best known from just nearby.
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 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.