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History · Shannon

Shannon’s post office opened in 1861, and 33% of its homes were built before 1940

1861first post office
0on the National Register
33%homes built before 1940
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Quick answers

How Shannon began

When was Shannon founded?

1861

The Shannon post office opened in 1861, the earliest record of the town by name.

2020 census: 801165 years
Founding year: the first Shannon post office (Blevins & Helbock, CC0).The full story ↓

What stands out about Shannon’s past

Read from the archive, the National Register and the record. The page puts what stands out first.

A history waiting to be writtenNo old photos of Shannon are in the public archives yet. The rest are in attics and albums.Old housesHalf of Shannon’s homes were built before 1961.
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The first neighbors to add old photos shape how Shannon’s history is told.

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

How Shannon came to be

From Wikipedia’s history of Shannon.

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The land that would become Shannon was originally known as Lost Springs, consisting of open prairie and spring-fed groves. Following the Black Hawk War, settlers arrived, drawn by the availability of timber, water, and fertile land.

The town's development accelerated in 1859 with the extension of the Illinois Central Railroad line through the region. The new depot was named Shannon, after William Shannon, one of the railroad's directors. He is buried in nearby Freeport City Cemetery.

By 1860, the town was officially platted. Within a decade, Shannon was incorporated and a local government was established.

Text from Wikipedia, licensed CC BY-SA 4.0.

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.

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Questions about Shannon’s history

What year was Shannon founded?

The Shannon post office opened in 1861, the earliest record of the town by name (U.S. post office records).

Memory lane

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

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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). How TownRatings grades history →

From 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.