Founding year: the first Oblong post office (Blevins & Helbock, CC0). Wikidata: 1883.The full story ↓
History grade
What drives Oblong’s History grade
On its age, its old homes and the National Register, Oblong is more historic than 46% of U.S. towns. Its share of homes from before 1940 holds the grade up; its National Register listings pull it down.
B−
HistoryA character grade: shown, never part of Oblong’s 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 Oblong’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.
How sure. Graded on any two of the three inputs instead, the letter would range from C− to B. The pre-1940 share is a Census survey estimate (±7.3 points). The founding year is the first post office, not a stated founding date; Wikidata’s 1883 falls in the same era, so the grade doesn’t depend on which one is used.
Founding year: the first post office (other dates in Quick answers). 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 Oblong’s past
Read from the archive, the National Register and the record. The page puts what stands out first.
Oblong was incorporated in 1883. The original town site was on a naturally occurring oblongular prairie, hence the name. The crossroads at the town site was the location of a general store owned by Henry Peck. The prominent sign "Hen. Peck" gave rise to the village's original moniker, Henpeck.
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.
The Oblong post office opened in 1852, the earliest record of the town by name (U.S. post office records). Wikidata gives 1883.
How does Oblong rank for history?
Oblong is more historic than 46% of U.S. towns. 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.
How old are the homes in Oblong?
26% of Oblong’s homes were built before 1940 (Census estimate, ±7.3 points), against a typical 11% for an Illinois town; the median home was built in 1963.
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 Wikimedia Commons (2), Wikipedia, Wikidata and Wikipedia for famous people, 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.