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BHistory
History · Flanagan

Flanagan’s post office opened in 1882, and 48% of its homes were built before 1940

More historic than 56% of U.S. towns. What drives it

Below: 1 old photo or paper, maps from 1917 on, and the census since 1890.

1882first post office
0on the National Register
48%homes built before 1940
1old photo or paper
1famous people
Photo: Nyttend · Public domain
Quick answers

How Flanagan began

When was Flanagan founded?

1882

The Flanagan post office opened in 1882, the earliest record of the town by name.

First census: 384 in 18902020 census: 1,010144 years

How historic is Flanagan?

B

More historic than 56% of U.S. towns, on its age, its old homes and the National Register.

What drives the grade ↓
Founding year: the first Flanagan post office (Blevins & Helbock, CC0).
History grade

What drives Flanagan’s History grade

On its age, its old homes and the National Register, Flanagan is more historic than 56% 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 Flanagan’s overall grade.
All U.S. towns we grade (21,289)Ahead of 56%
NewerOlder

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 Flanagan’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 (±11.5 points). The founding year is the first post office, not a stated founding date.

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 Flanagan’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 Flanagan’s collection

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

Decades since 1900 with photos
00s10s20s30s40s50s60s70s80s90s
1 of 10 decades. The empty ones are waiting for someone’s album.
The story so far

Flanagan, in brief

Wikipedia doesn’t have a history of Flanagan yet. The photos, dates and memories neighbors add here are how it gets written.

Flanagan is a village in Livingston County, Illinois, United States. As of the 2020 census, Flanagan had a population of 1,010.

Its first post office opened in 1882. Between the 2010 and 2020 censuses its population fell from 1,110 to 1,010 (-9%).

Intro from Wikipedia. Population: U.S. Census Bureau.

Timeline

Flanagan, 1882 to 1958

Woven from the archive, old maps, post office records, the National Register and the people born here.

  1. 19th century
  2. 1882Post officeThe Flanagan post office opens
  3. 20th century
  4. 1915Born hereLois Gunden is born here
  5. 1958In the archiveFlanagan quadrangle, Illinois : 15 minute series
  6. 1958On the mapFirst mapped by the U.S. Geological Survey
By decade

Flanagan, decade by decade

One decade in the archive so far: the 1950s. Scroll each row; tap a photo for its story.

1960s–1990snothing yet
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.
Add from your album
On the map

Flanagan on the map, 1958 to 1998

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

Flanagan on the 1958 USGS mapFlanagan on the 1983 USGS mapFlanagan on the 1998 USGS map1958Flanagan 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 Flanagan.

Every building

Flanagan, building by building, 1917

Fire insurance maps drew every building, what it was made of and what it was used for, so insurers could price the risk of fire. Pick a sheet.

Flanagan fire insurance map, 1917, sheet 11917Sheet 1 of 2

Sanborn Map Company, via the Library of Congress. Editions published in 1930 or earlier, which are in the public domain.

Then & now

Stand where they stood

No then-and-now pairs yet. Take a photo from the same spot as an old one and they appear here side by side.

Flanagan quadrangle, Illinois : 15 minute series
Retake this viewFlanagan quadrangle, Illinois : 15 minute series, 1958

Find the spot, match the angle, and add your photo. It becomes the first then-and-now pair on Flanagan’s page.

Retake this view · +15
People over time

Flanagan, census by census

02004006008001,0001,2001900192019401960198020002020Peak: 1,110

Between 384 and 1,110 people in every census since 1890.

14 censuses, 1890–2020.

U.S. Census Bureau decennial counts, from the census table on Flanagan’s Wikipedia page.

Questions about Flanagan’s history

What year was Flanagan founded?

The Flanagan post office opened in 1882, the earliest record of the town by name (U.S. post office records).

How does Flanagan rank for history?

Flanagan is more historic than 56% 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 Flanagan?

48% of Flanagan’s homes were built before 1940 (Census estimate, ±11.5 points), against a typical 11% for an Illinois town; the median home was built in 1945.

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 Wikimedia Commons (2), Wikidata and Wikipedia for famous people, U.S. Geological Survey historical maps, U.S. Census counts (via Wikipedia), the US Post Offices dataset (Blevins & Helbock), the USGS Geographic Names Information System and Sanborn fire insurance maps (Library of Congress). Archive images are copied here with their credits and licenses, shown on each photo’s page. Refreshed monthly.