Wikipedia doesn’t have a history of Manlius yet. The photos, dates and memories neighbors add here are how it gets written.
Manlius Township is one of twenty-five townships in Bureau County, Illinois, USA. As of the 2020 census, its population was 574 and it contained 306 housing units. Manlius Township changed its name from Green River Township on an unknown date.
Its first post office opened in 1871. Between the 2010 and 2020 censuses its population fell from 359 to 298 (-17%).
Intro from Wikipedia. Population: U.S. Census Bureau.
Timeline
Manlius, 1871 to 1921
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 the National Register of Historic Places (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.