US Post Offices dataset (Blevins & Helbock, CC0). Places and cemeteries from the USGS Geographic Names Information System (2021).
The story so far
La Prairie Township, in brief
Wikipedia doesn’t have a history of La Prairie Township yet. The photos, dates and memories neighbors add here are how it gets written.
La Prairie Township is located in Marshall County, Illinois. As of the 2010 census, its population was 364 and it contained 158 housing units. La Prairie Township was originally named Fairfield Township, but changed its name in December, 1850.
Between the 2010 and 2020 censuses its population fell from 364 to 326 (-10%).
Intro from Wikipedia. Population: U.S. Census Bureau.
Timeline
La Prairie Township, 1850 to 1973
Woven from the archive, old maps, post office records, the National Register and the people born here.
Nothing in the archives for these yearsWeddings on Main Street, storms, parades, school pictures, the old store. If it’s in your family album, it belongs here.
Every edition of the U.S. Geological Survey’s map of La Prairie Township. Tap a year, or press play to watch the town change.
1945Bradford 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 La Prairie Township.
Then & now
Stand where they stood
No then-and-now pairs yet. Take a photo from the same spot as an old one and they appear here side by side.
Retake this viewCLOSED STORE AND GAS STATION IN LA PRAIRIE CENTER, 1973
Find the spot, match the angle, and add your photo. It becomes the first then-and-now pair on La Prairie Township’s page.
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 (1), 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.