Mount Union, Franklin County
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| City | Mount Union |
| State | Pennsylvania (PA) |
| County | Franklin |
| Country | United States of America |
| Timezone | Eastern Time (America/New_York) |
| Latitude | 39.90537 |
| Longitude | -77.503043 |
| Density | N/A /km² |
| Incorporated | N/A |
| ZIP Code(s) | 17222, 17066 |
| Area Code | 215, 223, 267, 272, 412, 445, 484, 570, 582, 610, 717, 724, 814, 835, 878 |
| County Seat | Chambersburg |
| School District | Mount Union Area School District |
Mount Union is a locality in Franklin County, Pennsylvania, United States. Mount Union is located at 39.9054°N, 77.5030°W. It observes the Eastern Time (America/New_York) timezone. ZIP code: 17066.
Mount Union rises from the embrace of rolling hills, a place where the Juniata River’s quiet murmur forms a constant companion to the land. It lies 21.6 miles north-north-east of Hagerstown, MD (from Hagerstown, MD: bearing 32°T), and is situated 8.7 miles east-south-east of Chambersburg. The terrain here is a testament to ancient geological forces, with slopes that climb towards skies often painted in hues of soft lavender and bruised plum at dusk, the light catching the distant ridges with a tender, fleeting glow. Fields of amber grain sway in the breeze, interspersed with stands of deciduous trees whose leaves, in their seasonal turn, offer a vibrant spectacle of fiery reds and rich golds. The air itself carries a crisp, clean scent, a blend of fertile earth and the distant whisper of pine. The history of Mount Union is deeply entwined with the river that flows beside it, a vital artery for transport and commerce in days past. This locality once pulsed with the industry of iron production, the echoes of furnaces and forges still seeming to linger in the very stones of older buildings, though that era has long since receded. Today, agriculture remains a cornerstone of Mount Union's economy, with farms that have been tended by generations of families, their livelihood tied to the dependable cycles of planting and harvest. The community carries a quiet resilience, a character forged by the land and the enduring spirit of its people, who find beauty in the steady rhythm of life and the enduring strength of their shared heritage.
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This page provides an embedded street and satellite map of Mount Union, Pennsylvania — switch between views using the small square in the bottom left-hand corner of the map. Coordinates: 39.90537, -77.503043. 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 Mount Union and Franklin County.
Detailed location data for Mount Union includes the ZIP code (17222), telephone area code (215, 223, 267, 272, 412, 445, 484, 570, 582, 610, 717, 724, 814, 835, 878), county seat of Franklin County (Chambersburg), and school district assignment (Mount Union Area School District). 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 Mount Union 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. |