Rosemont, Howard County
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| City | Rosemont |
| State | Maryland (MD) |
| County | Howard |
| Country | United States of America |
| Timezone | Eastern Time (America/New_York) |
| Latitude | 39.135664 |
| Longitude | -76.87414 |
| Density | N/A /km² |
| Incorporated | N/A |
| ZIP Code(s) | 21227, 20877, 21758 |
| Area Code | 301, 240, 410, 443 |
| County Seat | Ellicott City |
| School District | Frederick County Public Schools |
Rosemont is a locality in Howard County, Maryland, United States. Rosemont is located at 39.1357°N, 76.8741°W. It observes the Eastern Time (America/New_York) timezone. ZIP code: 21758.
Rosemont unfolds across a gentle, rolling terrain where the cultivated fields meet the wilder edges of woodlands, a quiet tapestry woven from amber waves of grain and the deep greens of old oaks. The air here carries the clean scent of damp earth after a morning shower, a subtle perfume mingling with the distant hum of traffic from larger arteries that bypass this more deliberate pace of life. Sunlight, when it breaks through the frequent cloud cover, possesses a soft, diffused quality, illuminating the weathered wood of farmhouses and the occasional glint of sunlight on a slow-moving creek as it meanders through the landscape. The land itself feels patient, bearing the marks of seasons past and present with an unpretentious grace, a place where the horizon line is often softened by a hazy, almost wistful, afternoon light. The history of Rosemont is deeply entwined with the agricultural heritage of Howard County, a legacy evident in the enduring presence of family farms and the quiet dignity of barns that have witnessed generations of harvests. While the economy has diversified, the spirit of the land still holds sway, with local businesses often catering to the needs of a community that values its connection to the soil and the traditions it represents. Occasionally, the silhouette of a stately, historic home appears through the trees, a silent sentinel to a past era, hinting at the stories held within its walls. Rosemont remains a place where the past is not entirely buried, but rather forms a foundational layer, a quiet bedrock upon which the present continues to build, often with a nod to the enduring rhythms of rural life.
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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: 39.135664, -76.87414. 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 Howard County.
Detailed location data for Rosemont includes the ZIP code (21227), telephone area code (301, 240, 410, 443), county seat of Howard County (Ellicott City), 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. |