How Chouteau Township came to be
From Wikipedia’s history of Chouteau Township.
Chouteau Township was named after Chouteau Island, which was named for Pierre Chouteau, a member of the Chouteau family.
Text from Wikipedia, licensed CC BY-SA 4.0.
Each edition grades its towns against each other only.
More historic than 23% of U.S. towns · #604 of 768 in Illinois. What drives it
Most of Chouteau Township was built recently: 7% of its homes predate 1940 and the median home dates from 1963. Below: maps from 1927 on.
More historic than 23% of U.S. towns, on its age, its old homes and the National Register.
On its age, its old homes and the National Register, Chouteau Township is more historic than 23% of U.S. towns, #604 of 768 in Illinois. Its share of homes from before 1940 holds the grade up; its National Register listings pull it down.
Few Illinois towns list much on the Register (a typical Illinois town has 0.5 per 10,000 residents, the U.S. 2.4), so Chouteau Township’s 0.0 sits below most of its state (28% of Illinois towns have fewer) while its 0 listings outnumber those of 23% of U.S. towns.
Founding year: our sources. Homes: Census ACS 2020–24. National Register: National Park Service, May 2026 list; each listing counted once (boundary changes and added documentation belong to their listing), and a historic district counts its contributing buildings. How TownRatings grades history →
Read from the archive, the National Register and the record. The page puts what stands out first.
Four other post offices opened and closed inside today’s town.
US Post Offices dataset (Blevins & Helbock, CC0). Places and cemeteries from the USGS Geographic Names Information System (2021).
The first neighbors to add old photos shape how Chouteau Township’s history is told.
From Wikipedia’s history of Chouteau Township.
Chouteau Township was named after Chouteau Island, which was named for Pierre Chouteau, a member of the Chouteau family.
Text from Wikipedia, licensed CC BY-SA 4.0.
Woven from the archive, old maps, post office records, the National Register and the people born here.
On the mapFirst mapped by the U.S. Geological SurveyWeddings 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 Chouteau Township. Tap a year, or press play to watch the town change.

U.S. Geological Survey historical topographic maps (public domain), via Esri’s collection of the scans. The red ring marks the center of Chouteau Township.
Each neighbor’s History grade, on the same three inputs.
Chouteau Township is more historic than 23% of U.S. towns, #604 of 768 in Illinois. The History grade combines the town’s founding era, the share of homes built before 1940 and its National Register listings. It’s a character grade, so it isn’t part of the overall grade. How it works.
7% of Chouteau Township’s homes were built before 1940 (Census estimate, ±2.7 points), against a typical 11% for an Illinois town; the median home was built in 1963.
What the archives can’t tell you, neighbors can.
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).
From Wikipedia, 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.





1927Alton sheet · 1:62,500