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A+History
History · Buffalo Township

38% of Buffalo Township’s homes were built before 1940

More historic than 97% of U.S. towns · #15 of 768 in Illinois. What drives it

9 places in town are on the National Register. Below: maps from 1946 on.

9on the National Register
38%homes built before 1940
Quick answers

About Buffalo Township’s history

How historic is Buffalo Township?

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More historic than 97% of U.S. towns, on its age, its old homes and the National Register.

What drives the grade ↓
History grade

What drives Buffalo Township’s History grade

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.
All U.S. towns we grade (21,289)Ahead of 97%
NewerOlder
Illinois towns of 2,500+ (768)Ahead of 98%

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.

★ What stands out · Help out

Start Buffalo Township’s collection

The first neighbors to add old photos shape how Buffalo Township’s history is told.

Decades since 1900 with photos
00s10s20s30s40s50s60s70s80s90s
0 of 10 decades. The empty ones are waiting for someone’s album.
On the National Register

9 historic places in Buffalo Township

The country’s official list of buildings and places worth saving.

places listed
9
National Historic Landmarks
0
none yet
historic buildings protected
9
each building in a district counts
first listed
1996
John McGrath House
BuildingsStructures

Architectural styles listings

Queen Anne1
Perpetual or Continuous Lime Kiln1

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.

  1. 19th century
  2. 1833Post officeThe Buffalo Grove post office opens
  3. 1856Post officeThe Buffalo Grove post office closes
  4. 20th century
  5. 1946On the mapFirst mapped by the U.S. Geological Survey
By decade

No old photos in the archives yet

Weddings on Main Street, storms, parades, school pictures, the old store. If it’s in your family album, it belongs here.

Be the first to add onePhotograph a print flat, in daylight, no flash.
Add from your album
On the map

Buffalo Township on the map, 1946 to 1983

Every edition of the U.S. Geological Survey’s map of Buffalo Township. Tap a year, or press play to watch the town change.

Buffalo Township on the 1946 USGS mapBuffalo Township on the 1983 USGS map1946Sterling 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.

See all →
Places that used to be

Lost post offices, old corners, places now gone and burying grounds

Another post office, Buffalo Grove, opened and closed inside today’s town.

Hamlets and corners on the map
Buffalo Grove
Gone or out of use
Brand SchoolschoolBrick SchoolschoolBuffalo Grove SchoolschoolCanada SchoolschoolCottage Hill SchoolschoolDoty SchoolschoolEvergreen SchoolschoolGratatum SchoolschoolHenry SchoolschoolJudson Schoolschool
4cemeteries and burying grounds inside Buffalo Township
Buffalo GroveFairmountReedSaint Mary's

US Post Offices dataset (Blevins & Helbock, CC0). Places and cemeteries from the USGS Geographic Names Information System (2021).

Stories next door

History across the town line

Each neighbor’s History grade, on the same three inputs.

Questions about Buffalo Township’s history

How does Buffalo Township rank for history?

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.

Memory lane

What the archives can’t tell you, neighbors can.

Town Square →
Start a conversation
Sources

Where this page comes from

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.