Rosemont, Mercer County
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| City | Rosemont |
| State | New Jersey (NJ) |
| County | Mercer |
| Country | United States of America |
| Timezone | Eastern Time (America/New_York) |
| Latitude | 40.239276 |
| Longitude | -74.694048 |
| Density | N/A /km² |
| Incorporated | N/A |
| ZIP Code(s) | 08619, 08556 |
| Area Code | 609, 640 |
| County Seat | Trenton |
Rosemont is a locality in Mercer County, New Jersey, United States. Rosemont is located at 40.2393°N, 74.6940°W. It observes the Eastern Time (America/New_York) timezone. ZIP code: 8556.
Rosemont unfolds across a landscape of gentle slopes and fertile hollows, where the earth sighs with the quietude of centuries. It lies 3.0 miles east-north-east of Trenton, NJ (from Trenton, NJ: bearing 59°T), and is situated 4.9 miles south-south-east of Mercer. The land here is a tapestry of cultivated fields, their amber and emerald hues shifting with the sun's slow arc, interspersed with stands of mature oak and maple that whisper secrets on the breeze. The air, particularly in the soft glow of late afternoon, carries a clean, earthy scent, a testament to the rich soil that has sustained generations. Farmsteads, with their weathered barns and sturdy silos, punctuate the rolling terrain, their silhouettes softened by the haze of summer or the crisp clarity of autumn. The character of Rosemont is one of quiet endurance, a place where the rhythm of the seasons dictates the pulse of life, and the land itself seems to breathe with a patient, unhurried spirit. The history of Rosemont is deeply intertwined with the agricultural bounty it has long produced, a legacy evident in the enduring farms and the subtle patterns of land division that still shape the countryside. For many years, the local economy thrived on the cultivation of grains and the raising of livestock, a tradition that continues to inform the identity of Rosemont even as modern influences begin to gently weave their way into its fabric. Small businesses, often family-owned and operated, form the backbone of the commercial life, their storefronts lining the main thoroughfares with a welcoming, unpretentious charm. While no grand monuments mark its past, the very soil of Rosemont holds stories of hard work and simple prosperity, a quiet narrative of a community built on the land's enduring generosity.
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This page provides an embedded street and satellite map of Rosemont, New Jersey — switch between views using the small square in the bottom left-hand corner of the map. Coordinates: 40.239276, -74.694048. 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 Rosemont and Mercer County.
Detailed location data for Rosemont includes the ZIP code (08619), telephone area code (609, 640), county seat of Mercer County (Trenton), 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 Rosemont 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. |