Rosemont, Montgomery County
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| City | Rosemont |
| State | Maryland (MD) |
| County | Montgomery |
| Country | United States of America |
| Timezone | Eastern Time (America/New_York) |
| Latitude | 39.127885 |
| Longitude | -77.188592 |
| Density | N/A /km² |
| Incorporated | N/A |
| ZIP Code(s) | 21227, 20877, 21758 |
| Area Code | 301, 240, 410, 443 |
| County Seat | Rockville |
| School District | Frederick County Public Schools |
Rosemont is a locality in Montgomery County, Maryland, United States. Rosemont is located at 39.1279°N, 77.1886°W. It observes the Eastern Time (America/New_York) timezone. ZIP code: 21758.
Rosemont unfolds across a landscape shaped by gentle slopes and the meandering flow of small creeks, remnants of the ancient geological forces that molded this corner of Montgomery County. It lies 1.3 miles south-south-east of Gaithersburg, MD (from Gaithersburg, MD: bearing 147°T), and is situated 3.3 miles east-south-east of Montgomery. The air here, especially after a summer rain, carries a damp, earthy scent, a subtle perfume of well-tended lawns and the deeper, wilder fragrance of the bordering woodlands. Mature trees, their branches often draped with Spanish moss in the warmer months, cast shifting patterns of shade on quiet streets, creating pockets of coolness even on the most sun-drenched afternoons. The character of Rosemont is one of understated elegance, a place where well-kept homes suggest a settled prosperity, and the rhythm of daily life feels unhurried, a deliberate counterpoint to the urban sprawl that lies just a short distance away. The history of Rosemont is interwoven with the agricultural past of the region, a time when the land was primarily given over to farms and orchards, the fertile soil yielding its bounty. Though the agricultural roots have largely receded, the echoes of that era can still be felt in the broad avenues and the sense of space that pervades the neighborhoods, as if the land itself remembers its former purpose. The local economy, while no longer driven by the plow or the orchard, has adapted, with many residents commuting to the larger economic centers nearby, while others contribute to the vibrant small businesses that serve the immediate community. Rosemont’s distinctive character is also shaped by its proximity to significant educational institutions, drawing a diverse population and fostering an intellectual undercurrent that adds to its unique atmosphere.
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This page provides an embedded street and satellite map of Rosemont, Maryland — switch between views using the small square in the bottom left-hand corner of the map. Coordinates: 39.127885, -77.188592. 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 Montgomery County.
Detailed location data for Rosemont includes the ZIP code (21227), telephone area code (301, 240, 410, 443), county seat of Montgomery County (Rockville), and school district assignment (Frederick County Public Schools). 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. |