Explore Marshall, California, with this interactive street and satellite map.
This page also offers TOPO MAPS — the official USGS topographic sheets — plus USGS aerial imagery, a labelled USNG grid overlay, a distance and bearing tool, and a GPS grid-reference readout. See How to Use This Map below.
This interactive map shows the street layout and satellite imagery for Marshall, California. 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. Drag the map to pan to any area of California or beyond.
Click ⛶ Fullscreen to expand the map to fill your screen. To return to the normal page view, press the Escape key, 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).
TOPO MAPS — NEW. Click the green 🔍 Search Maps button below the map to open a second map with a Base map row offering three choices. OSM is the standard OpenStreetMap street map. Topo shows the official USGS topographic maps from The National Map — contours, hydrography, land cover and shaded relief, the same mapping used for hiking, hunting and back-country navigation in the Adirondacks, the Catskills and the Finger Lakes. Imagery shows USGS aerial photography, mostly 1-metre NAIP. The search box finds any US town, county or landmark by name, so you are not limited to Marshall.
Reading the map like a paper quad. Click Grid to overlay the U.S. National Grid (USNG), labelled along the edges exactly as a printed topographic sheet is — at normal zoom the squares are one kilometre across, so you can read a six-figure grid reference by eye and judge distance directly off the map. Click Measure, then tap two points, to get the distance between them together with the grid bearing in degrees and mils, the true bearing, and the magnetic bearing to set on a compass.
Click 📍 My position to take a single GPS reading from your device. It marks where you are and reports your position as a USNG grid reference as well as plain latitude and longitude — USNG being the format FEMA and US search and rescue teams work from — with a Copy position button so you can paste it straight into a text message. It takes one reading and stops, rather than tracking continuously, to conserve your battery. Note that map tiles need cell coverage, but a GPS reading does not — your coordinates stay correct even where the map itself cannot load.
| City | Marshall |
| State | California (CA) |
| County | Marin County |
| Country | United States of America |
| Timezone | Pacific Time (America/Los_Angeles) |
| Latitude | 38.160477 |
| Longitude | -122.894162 |
| Population | 480 |
| Density | 8.0 /km² |
| Incorporated | N/A |
| ZIP Code | 94940 |
| Area Code | 510 |
| County Seat | San Rafael |
Marshall clings to the edge of the Pacific Ocean, where the cool, salt-heavy breath of the tide washes over the shoreline daily. It lies 14.8 miles west-southwest of Petaluma, CA (from Petaluma, CA: bearing 251°T), and is situated 18.0 miles west-northwest of Novato. The landscape surrounding Marshall is defined by a quiet, rugged transition from the water to the inland slopes, where the earth rises toward the distant, hazy silhouette of the Coast Ranges. A short distance away, the quiet waters of Abbotts Lagoon mirror the shifting gray clouds, while the nearby reach of Frink Canyon carves a deep, shadowed path through the terrain. The air here holds a particular clarity, often softened by a persistent fog that drifts inland, dampening the sound of the surf and muting the vibrant, sun-bleached colors of the coastal grasses.
Oysters have long defined the economic pulse of Marshall, with racks and beds submerged in the nearby waters representing a heritage of maritime labor that persists despite the changing tides of the modern world. This industry remains the silent backbone of the local identity, an quiet endeavor that requires a patient attunement to the natural cycles of the Greater Farallones National Marine Sanctuary. Those who traverse the local landscape might find themselves wandering the Loop Trail, a path that offers a vantage point over the stillness of the water, punctuated only by the occasional cry of a gull or the distant movement of water near Duck Island. Though the flow of Cataract Creek marks the land two miles distant, it is the constant, rhythmic presence of the Pacific Ocean that dictates the slow, deliberate pace of life for everyone who calls Marshall their home.
Loading news…
Loading news-world…
Loading news-world…
This page provides an embedded street and satellite map of Marshall, California. Coordinates: 38.160477, -122.894162. Live weather conditions are sourced directly from the National Weather Service. Real-time local and world news feeds keep the page current.
Detailed location data for Marshall includes the ZIP code (94940), telephone area code (510), county seat of Marin County (San Rafael), and school district assignment.
Search Maps opens a second, independent map. It searches OpenStreetMap for any US town, county or landmark by name; offers USGS topographic maps and USGS aerial imagery as base layers; overlays a labelled U.S. National Grid (USNG) so the map can be read like a printed topographic quad; measures distance and grid, true and magnetic bearings between any two points; and takes a single GPS fix reporting your position as a USNG grid reference and as latitude and longitude. Map tiles require cell coverage, but a GPS position does not, so the coordinates remain correct even where the map cannot load.
Location data is drawn from the USGS Geographic Names Information System (GNIS) and cross-verified against 2020 US Census records by coordinate proximity. Population figures are sourced from the 2020 US Census.
| Page generated | September 2026 |
| Location data | SimpleMaps US Cities Database; coordinates matched to USGS GNIS definitive data |
| Map layers | Google Maps; © OpenStreetMap contributors; USGS The National Map topographic and aerial imagery (public domain); magnetic declination from NOAA NCEI (World Magnetic Model) |
| Wikipedia validation | Article content matched to USGS GNIS coordinates via Wikipedia geosearch API. |