Upper St. Clair is a suburb in the Pittsburgh metropolitan area, sitting roughly 8 to 11 miles south of Downtown Pittsburgh in the South Hills region of Allegheny County. Anyone considering living in Upper St. Clair, PA will find a community rich with local history.

The current market reflects the township's long-standing appeal - the median home sale price is around $450,000 as of mid-2026, homes are spending an average of 53 days on the market, and there are about 65 available listings to choose from at any given time. If you're thinking about buying or selling here, knowing a little of Upper St. Clair's backstory gives you a better read on why the place is the way it is.

The History of Upper St. Clair, PA at a Glance

The Township of Upper St. Clair was incorporated in 1788, though the area had already been settled for a couple of decades by then - a Scotsman named John Fife arrived around 1762 and was the first European settler on record. What started as a collection of large farmsteads gradually became the residential suburb you see today. The township runs its own local government, and the official website is twpusc.org.

Is Upper St. Clair a city, town, or neighborhood?

Upper St. Clair is officially a township - not a city, not a single neighborhood. It functions as an independent municipality within Allegheny County, with its own government separate from Pittsburgh proper.

Where Is Upper St. Clair and What County Is It In?

Upper St. Clair sits entirely within Allegheny County, Pennsylvania - it doesn't cross into any neighboring counties. Geographically, it's part of the South Hills region of the Pittsburgh metropolitan area, about 8 to 11 miles south of Downtown Pittsburgh by car.

Is Upper St. Clair in more than one county?

No. The township is completely inside Allegheny County. That means buyers here pay Allegheny County property taxes and record their deeds through the county's real estate portal - no split-county complications to sort out.

How Upper St. Clair Got Its Name

The township is named for General Arthur St. Clair - a Scottish-born Revolutionary War general who went on to serve as the ninth President of the United States in Congress Assembled. The original territory was simply called St. Clair Township. Sometime between 1836 and 1839, that land was divided into two separate municipalities: Upper St. Clair and Lower St. Clair.

The story behind the name

That 19th-century split created the boundaries that roughly define the township today, and the name hasn't changed since. The general's military service and political role are what the area has carried as its identity for nearly two centuries.

Founding and Timeline of Upper St. Clair

John Fife, a Scotsman who came up from Virginia, is credited as the first European settler in the area. He arrived around 1762 and put down roots near what is now the intersection of Washington and McLaughlin Run Roads. Others followed not long after - Alexander Gilfillan came in the late 1760s and claimed 413 acres, and families named Couch, McLaughlin, and Connor were among the 35 to 40 original landholders in the township.

Early settlement and growth

For the first century or so, the local economy was agricultural. Communities like Beadling, Clifton, and Boyce grew up around the main farmsteads. Then in the late 19th century, several coal mines opened and shifted the economic focus considerably.

After 1913, the township started moving away from farming and mining. It was a slow transition - the kind that takes generations - but it's what produced the primarily residential suburb that exists today.

Historic Districts, Landmarks, and Museums

Two properties anchor Upper St. Clair's preserved history. The Fulton Log House, built around 1830 by the Gilfillan family to house farm workers, was added to the National Register of Historic Places on December 6, 1975. The Gilfillan Farm - a mid-to-late 1800s working farm and also a designated National Historic Place - serves as the township's primary educational site.

History museums in Upper St. Clair

The Historical Society of Upper St. Clair was founded in 1988 and operates Gilfillan Farm as a local museum. They maintain archives of photographs, documents, and oral histories tied to the township's development - a genuinely useful resource if you're trying to trace the history of an older property.

What Upper St. Clair Is Known For

The township's roots are in agriculture and late 19th-century coal mining, and that legacy shows up in the surviving farmsteads and historic log houses still standing today. There's no distinctive signature food documented for the area, but the physical history is very much present if you know where to look.

Upper St. Clair is also known for the people it's produced. Alumni of Upper St. Clair High School have gone on to careers in professional sports, literature, and film.

Notable people from Upper St. Clair

Sean Casey - the former MLB first baseman and current MLB Network analyst - moved to the township as a child and graduated from the local high school. NFL linebacker Sean Lee and author and filmmaker Stephen Chbosky are also Upper St. Clair High School alumni.

Frequently Asked Questions

When were most of the residential neighborhoods in Upper St. Clair developed?

The shift toward a primarily residential suburb began after 1913. Before that, the land was largely given over to farming and the coal mining operations that came in the late 19th century.

Are there historical coal mines under Upper St. Clair that require buyers to get mine subsidence insurance?

Yes - the area had several mines operating in the late 19th century. If you're buying one of the roughly 65 available homes in the township, it's worth asking your insurance agent directly whether mine subsidence coverage makes sense for your specific address.

Are there designated historic districts in Upper St. Clair, PA that restrict how I can renovate my home's exterior?

Individual properties like the Fulton Log House and Gilfillan Farm are on the National Register of Historic Places, but whether your specific neighborhood carries any municipal historic zoning restrictions is a separate question. Check with the local government at twpusc.org for the answer on your address.

Does owning a historically significant property in Upper St. Clair impact my property taxes or homeowners insurance rates?

It can. Older homes often cost more to insure because of the specialized materials required for replacement. On the tax side, verify the exact property tax assessment through Allegheny County rather than relying on estimates.

How did Upper St. Clair's history as a farming community influence current zoning and lot sizes compared to other South Hills suburbs?

The early settlers held enormous tracts - Alexander Gilfillan's farm ran to 413 acres. As those large farmsteads were subdivided across the 20th century, they shaped the residential lot lines you see in the township today.

How can I find the specific history, original blueprints, or builder information for an older Upper St. Clair home?

Start with the Historical Society of Upper St. Clair, which maintains archives of documents and photographs related to the township's development. The municipal offices at twpusc.org are also a reasonable place to look for historical permit records.