On its age, its old homes and the National Register, Cahokia Heights is more historic than 61% of U.S. towns, #323 of 768 in Illinois. Its National Register listings hold the grade up; its share of homes from before 1940 pulls it down.
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HistoryA character grade: shown, never part of Cahokia Heights’ overall grade.
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 Cahokia Heights’ 2.9 sits above most of its state (70% of Illinois towns have fewer) while its 5 historic buildings outnumber those of 70% of U.S. towns.
How sure. Graded on two of the three inputs, so a change in either one moves the letter more than it would with three. The pre-1940 share (±2.6 points) is firm at this size.
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 →
What stands out about Cahokia Heights’ past
Read from the archive, the National Register and the record. The page puts what stands out first.
The formation of Cahokia Heights was part of a campaign and four-phase plan called "Better Together".
Curtis McCall Sr., Centreville Township Supervisor, led the consolidation efforts. His son Curtis McCall Jr. was mayor (village president) of Cahokia at the time; the mayor (village president) of Alorton, and clerk, cashier was JoAnne Reed; and the mayor of Centreville was Marius "Mark" Jackson; all were proponents of the merger.
Cahokia Heights is more historic than 61% of U.S. towns, #323 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.
What is on the National Register in Cahokia Heights?
4 listings, 2 of them National Historic Landmarks: 4 buildings, among them the Church of the Holy Family (a National Historic Landmark since 1970). 5 historic buildings in all.
How old are the homes in Cahokia Heights?
8% of Cahokia Heights’ homes were built before 1940 (Census estimate, ±2.6 points), against a typical 11% for an Illinois town; the median home was built in 1964.
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 the National Register of Historic Places (4), Wikipedia, 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.
★ Landmark
★ Landmark
