On its age, its old homes and the National Register, Buffalo Township is more historic than 97% of U.S. towns, #15 of 768 in Illinois. All 2 inputs are above most U.S. towns; its share of homes from before 1940 ranks highest and its National Register listings lowest.
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HistoryA character grade: shown, never part of Buffalo Township’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 Buffalo Township’s 34.0 sits above most of its state (89% of Illinois towns have fewer) while its 9 listings outnumber those of 75% 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 is a Census survey estimate (±7.3 points).
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 Buffalo Township’s past
Read from the archive, the National Register and the record. The page puts what stands out first.
National Park Service, National Register of Historic Places. Photos from Wikimedia Commons, credited on each place’s page.
The story so far
Buffalo Township, in brief
Wikipedia doesn’t have a history of Buffalo Township yet. The photos, dates and memories neighbors add here are how it gets written.
Buffalo Township is one of twenty-four townships in Ogle County, Illinois, USA. As of the 2010 census, its population was 2,813 and it contained 1,284 housing units.
Between the 2010 and 2020 censuses its population fell from 2,813 to 2,692 (-4%).
Intro from Wikipedia. Population: U.S. Census Bureau.
Timeline
Buffalo Township, 1833 to 1946
Woven from the archive, old maps, post office records, the National Register and the people born here.
Every edition of the U.S. Geological Survey’s map of Buffalo Township. Tap a year, or press play to watch the town change.
1946Sterling 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 Buffalo Township.
Famous people
Famous people close to Buffalo Township
Nobody well known was born in Buffalo Township itself, so here are the best known from just nearby.
Buffalo Township is more historic than 97% of U.S. towns, #15 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 Buffalo Township?
9 listings: 1 building, among them the John McGrath House (listed 1996, the first), and 1 structure.
How old are the homes in Buffalo Township?
38% of Buffalo Township’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 1952.
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 (2), 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.