Saint Clair, Westmoreland County
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| City | Saint Clair |
| State | Pennsylvania (PA) |
| County | Westmoreland |
| Country | United States of America |
| Timezone | Eastern Time (America/New_York) |
| Latitude | 40.268681 |
| Longitude | -79.548373 |
| Density | N/A /km² |
| Incorporated | N/A |
| ZIP Code(s) | 15042, 15210, 15601, 17970 |
| Area Code | 215, 223, 267, 272, 412, 445, 484, 570, 582, 610, 717, 724, 814, 835, 878 |
| County Seat | Greensburg |
Saint Clair is a locality in Westmoreland County, Pennsylvania, United States. Saint Clair is located at 40.2687°N, 79.5484°W. It observes the Eastern Time (America/New_York) timezone. ZIP code: 17970.
Saint Clair breathes a quiet resilience, its landscape a gentle embrace of rolling hills that spill into the broader Appalachian foothills. It lies 10.5 miles east-south-east of North Huntingdon, PA (from North Huntingdon, PA: bearing 114°T), and is situated 2.3 miles south-south-west of Greensburg. The air here, especially after a spring rain, carries the damp, earthy scent of fertile soil and the faintest whisper of coal dust, a legacy etched into the very contours of the land. The terrain, a subtle dance of rise and fall, shapes the way the sunlight falls, casting long, soft shadows in the late afternoon that paint the modest homes and sturdy trees with a mellow, golden hue. It is a place where the sky feels vast, a canvas for scudding clouds and the bold arc of a summer sunset, and where the quiet hum of daily life is punctuated by the distant rumble of a train, a constant reminder of connection to the wider world. The story of Saint Clair is deeply intertwined with the veins of anthracite coal that once pulsed beneath its surface, fueling industry and shaping the lives of generations. This rich seam of history is evident in the sturdy brick buildings that still stand, remnants of a more boisterous era, and in the enduring spirit of its people, who know the value of hard work and community. While the mines have largely fallen silent, the echoes of that era linger, a quiet undercurrent to the town's present-day character, which leans towards small-scale commerce and the simple pleasures of a life lived at a human pace. The Loyalhanna Creek, a ribbon of cool water, winds its way through the vicinity, offering a tranquil counterpoint to the industrial past, a place for quiet reflection and the enduring beauty of nature’s persistent renewal.
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This page provides an embedded street and satellite map of Saint Clair, Pennsylvania — switch between views using the small square in the bottom left-hand corner of the map. Coordinates: 40.268681, -79.548373. Live weather conditions are sourced directly from the National Weather Service, with current observations and a 7-day forecast also powered by Open-Meteo. Real-time local news and world news feeds keep the page current, while a Wikipedia summary or an editorially written description provides background on Saint Clair and Westmoreland County.
Detailed location data for Saint Clair includes the ZIP code (15042), telephone area code (215, 223, 267, 272, 412, 445, 484, 570, 582, 610, 717, 724, 814, 835, 878), county seat of Westmoreland County (Greensburg), and school district assignment. These are among the most commonly searched location details for any US city or town.
Location data is drawn from the USGS Geographic Names Information System (GNIS) and cross-verified against 2020 US Census records by coordinate proximity — ensuring the correct Saint Clair is identified even where the name is shared across multiple counties or states. Population figures are sourced from the 2020 US Census.
| Page generated | July 2026 |
| Location data | SimpleMaps US Cities Database; coordinates matched to USGS GNIS definitive data |
| Wikipedia validation | Article content matched to USGS GNIS coordinates via Wikipedia geosearch API. Location verified by proximity — not name matching alone. |