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–Not graded
History · Sligo

Sligo dates to 1828, and 32% of its homes were built before 1940

Below: old-book passages.

1828founded
0on the National Register
32%homes built before 1940
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Photo: Nyttend · Public domain
Quick answers

How Sligo began, and where its name came from

When was Sligo founded?

1828

Sligo dates its founding to 1828 (Wikidata). Its post office opened in 1868.

2020 census: 681198 years

How did Sligo get its name?

Sligo was named after the town of Sligo in Ireland.

Founding year: Wikidata. First post office: 1868. Name: Wikipedia, licensed CC BY-SA 4.0.

What stands out about Sligo’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 Sligo are in the public archives yet. The rest are in attics and albums.Old housesHalf of Sligo’s homes were built before 1952.Deep rootsEstablished in 1828: 198 years of Sligo.
★ What stands out · Help out

Start Sligo’s collection

The first neighbors to add old photos shape how Sligo’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 so far

Sligo, in brief

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

Sligo ( SLY-goh) is a borough in Clarion County, Pennsylvania, United States. The population was 686 at the 2020 census. It was named after the town of Sligo in Ireland.

Sligo was established in 1828. Between the 2010 and 2020 censuses its population fell from 720 to 681 (-5%).

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

From the old history books

What they wrote about Sligo in 1887

Passages that mention Sligo, cut from the printed page as they were published.

The new town of Sligo was laid out by the old furnace company in 187 1. Thomas Berrean, sr., built the first house in the new town. The company soon erected a new brick store building, now occupied by Hodil & Company, and in 1873 it erected the Sligo Hotel. Other buildings were soon erected, among …
History of Clarion County, Pennsylvania1887 · page 611Read the page →
Read the text

The new town of Sligo was laid out by the old furnace company in 187 1. Thomas Berrean, sr., built the first house in the new town. The company soon erected a new brick store building, now occupied by Hodil & Company, and in 1873 it erected the Sligo Hotel. Other buildings were soon erected, among which were the M. E. Church in 1873, and the Presbyterian Church in 1873-4. About the same time the public school-house was erected.

Text read by machine from the scan; it may contain errors.
The movement was initiated by the proprietors of Sligo furnace, J. Patton Lyon, in particular, and William Phillips, president of the Low Grade, then contemplating a branch to Sligo. Sligo was a promising place, newly laid out, on an excellent site, by Mr. Lyon, and was rapidly filling up.
History of Clarion County, Pennsylvania1887 · page 347Read the page →
Read the text

The movement was initiated by the proprietors of Sligo furnace, J. Patton Lyon, in particular, and William Phillips, president of the Low Grade, then contemplating a branch to Sligo. Sligo was a promising place, newly laid out, on an excellent site, by Mr. Lyon, and was rapidly filling up.

Text read by machine from the scan; it may contain errors.

Scans and text from the Internet Archive. Books published in 1930 or earlier, which are in the public domain.

By decade

Sligo, decade by decade

Today3 recent
Madison and Bald Eagle2015Madison and Bald EagleColerain 400 block in2015Colerain 400 block inBald Eagle from Colerain2015Bald Eagle from Colerain
Stories next door

History across the town line

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

Piney TownshipIts storynot graded: under 1,000 residents or part of its townToby TownshipIts storynot graded: under 1,000 residents or part of its town

Questions about Sligo’s history

What year was Sligo founded?

In 1828, according to Wikidata. Sligo’s post office opened in 1868.

Memory lane

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

Town Square →
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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 Wikimedia Commons (3), the US Post Offices dataset (Blevins & Helbock), the USGS Geographic Names Information System and old county and town histories (Internet Archive). Archive images are copied here with their credits and licenses, shown on each photo’s page. Refreshed monthly.