Each edition grades its towns against each other only.
More historic than 71% of U.S. towns. What drives it
Below: 1 old photo or paper, maps from 1947 on, and the census since 1880.
The Troy Grove Township post office opened in 1837, the earliest record of the town by name. Another post office, Culton (1893), opened inside today’s town and later closed.
More historic than 71% of U.S. towns, on its age, its old homes and the National Register.
On its age, its old homes and the National Register, Troy Grove Township is more historic than 71% of U.S. towns. 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 Troy Grove 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: 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 →
Read from the archive, the National Register and the record. The page puts what stands out first.
The first neighbors to add old photos shape how Troy Grove Township’s history is told.
Peaked at 316 in 1900; 225 people lived here in 2020.
15 censuses, 1880–2020.
U.S. Census Bureau decennial counts, from the census table on Troy Grove Township’s Wikipedia page.
Another post office, Culton, 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).
From Wikipedia’s history of Troy Grove Township.
Originally laid out as Homer, Illinois, the village was named by an early settler who emigrated from Homer, New York. As the town of Homer, Illinois already had a Post Office, the community took its name from a nearby grove, which was named for an early settler. A Post Office has been in operation under the name of Troy Grove since 1837.
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.
One decade in the archive so far: the 1920s. Scroll each row; tap a photo for its story.
Every edition of the U.S. Geological Survey’s map of Troy Grove 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 Troy Grove Township.
No then-and-now pairs yet. Take a photo from the same spot as an old one and they appear here side by side.
Find the spot, match the angle, and add your photo. It becomes the first then-and-now pair on Troy Grove Township’s page.
Retake this view · +15Each neighbor’s History grade, on the same three inputs.
The Troy Grove Township post office opened in 1837, the earliest record of the town by name (U.S. post office records).
Troy Grove Township is more historic than 71% 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.
31% of Troy Grove Township’s homes were built before 1940 (Census estimate, ±14.9 points), against a typical 11% for an Illinois town; the median home was built in 1967.
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 Wikimedia Commons (2), Wikipedia, U.S. Geological Survey historical maps, U.S. Census counts (via 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.
2011
