Peaked at 16,343 in 1940; 12,182 people lived here in 2020.
16 censuses, 1870–2020.
U.S. Census Bureau decennial counts, from the census table on Centralia Township’s Wikipedia page.
On the map
Centralia Township on the map, 1914 to 1970
Every edition of the U.S. Geological Survey’s map of Centralia Township. Tap a year, or press play to watch the town change.
1914Centralia 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 Centralia Township.
Centralia is named for the Illinois Central Railroad, built in 1853. The city was founded where the two original branches of the railroad converged. Centralia was first chartered as a city in 1859. Now Canadian National owns the line.
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.
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 (14), the Library of Congress (1), Wikidata (2), Wikipedia, 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.