Explore Marriottsville, Maryland, with this interactive street and satellite map. You can “grab” the Marriottsville, MD street map and move it around to re-centre it. You can change between standard map view and satellite map view by clicking the small square in the bottom left-hand corner of the map. You can use the zoom buttons on the lower right side of the map to zoom in or out to street-level detail. You will find live weather, local and world news below.
This interactive map shows the street layout and satellite imagery for Marriottsville, Maryland. Use the Map and Satellite buttons above to switch between street map and aerial imagery views. Use the + and − buttons to zoom in or out, or scroll your mouse wheel while holding the Control key to zoom. On a touchscreen, use a two-finger pinch gesture to zoom in and out.
Click ⛶ Fullscreen to expand the map to fill your screen for a larger view. To return to the normal page view, press the Escape key on your keyboard, click the ✕ Exit Fullscreen button that appears above the map, or on a mobile device tap the back button (Android) or the close icon (iOS).
Drag the map to pan to any area of Maryland or beyond. Switch to Satellite view to see high-resolution aerial photography of Marriottsville and surrounding areas, including streets, buildings, parks and waterways.
| City | Marriottsville |
| State | Maryland (MD) |
| County | Howard |
| Country | United States of America |
| Timezone | Eastern Time (America/New_York) |
| Latitude | 39.350105 |
| Longitude | -76.899421 |
| Population | 4,200 |
| Density | 120.0 /km² |
| Incorporated | N/A |
| ZIP Code(s) | 21104 |
| Area Code | 240, 301 |
| County Seat | Ellicott City |
Marriottsville is a locality in Howard County, Maryland, United States. It has a population of approximately 4,200. The population density is 120.0 people per km². Marriottsville is located at 39.3501°N, 76.8994°W. It observes the Eastern Time (America/New_York) timezone. ZIP code: 21104.
Marriottsville unfolds across a landscape defined by the persistent, rhythmic cutting of the South Branch Patapsco River, which carves a serpentine path through the verdant, shaded terrain. It lies 4.6 miles southeast of Eldersburg, MD (from Eldersburg, MD: bearing 144°T), and is situated 5.6 miles northeast of Howard. The air here holds a distinct, heavy clarity, often cooling rapidly as the shadows lengthen against the dense canopy of trees that characterize the local topography. Only a mile away, the expansive grounds of Patapsco Valley Sp provide a sanctuary of unbroken forest, where the soil remains damp and rich from the constant proximity to the water’s edge. Further out, the land rises into the gentle slopes typical of the Piedmont, with the distant, hazy silhouettes of the Blue Ridge Mountains occasionally visible on the horizon when the sky is stripped of its afternoon haze. Marriottsville maintains a quiet, deliberate pace that reflects its transition from a nineteenth-century milling center to a modern residential expanse. The economy, once tethered to the industrious use of the river’s power, has receded into a stillness where the sound of the water remains the primary constant. Remnants of its older identity linger in the rugged stone foundations and quiet lanes that wind toward the nearby Sylvan Dell Valley, far from the frantic energy of urban centers. Residents look toward the shimmering, contained waters of Piney Run Lake five miles away for respite, finding in these quiet, inland spaces a character forged by the intersection of colonial endurance and the slow, inevitable reclamation of the woods.
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This page provides an embedded street and satellite map of Marriottsville, Maryland — switch between views using the small square in the bottom left-hand corner of the map. Coordinates: 39.350105, -76.899421. 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 Marriottsville and Howard County.
Detailed location data for Marriottsville includes the ZIP code (21104), telephone area code (240, 301), county seat of Howard County (Ellicott City), 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 Marriottsville is identified even where the name is shared across multiple counties or states. Population figures are sourced from the 2020 US Census.
| Page generated | August 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. |