Explore Duncans Mills, 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 Duncans Mills, 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 Duncans Mills.
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 | Duncans Mills |
| State | California (CA) |
| County | Sonoma County |
| Country | United States of America |
| Timezone | Pacific Time (America/Los_Angeles) |
| Latitude | 38.453803 |
| Longitude | -123.055001 |
| Population | 280 |
| Density | 5.0 /km² |
| Incorporated | N/A |
| ZIP Codes | 95450, 95430 |
| Area Code | 408, 669 |
| County Seat | Santa Rosa |
Duncans Mills occupies a verdant stretch of bottomland where the currents of Orrs Creek pull toward the Pacific Ocean, carving a path through the landscape that feels ancient and deliberate. It lies 14.4 miles west-southwest of Windsor, CA (from Windsor, CA: bearing 244°T), and is situated 7.9 miles west-southwest of Hacienda. The air here holds a heavy, salt-sweet moisture that drifts inland from the coast, often thickening into a cool gray veil that brushes against the timbered hillsides. To the north, the terrain rises toward the distant, hazy silhouettes of the Coast Ranges, while the immediate surroundings are defined by the quiet drainage of the basin near Freezeout Flat. The environment remains wild and porous, with Sonoma Coast State Park providing a vast, protected periphery that keeps the encroaching reach of development at bay. Light in this valley has a distinct, amber quality during the late afternoon, catching the rustle of dry grasses and the dark, stoic limbs of the trees that define the local canopy.
Early industry in Duncans Mills thrived on the strength of the timber trade, drawing laborers who built a life around the rhythm of the saw and the hauling of redwoods. While the locomotive whistle no longer echoes through the valley, the legacy of that era persists in the architecture and the deliberate, unhurried pace of the remaining storefronts. The economy has shifted away from the mill toward a quiet hospitality, serving those who journey toward the Pacific Ocean or explore the nearby paths like the Monte Rio Fire Trail. Residents and visitors alike often find themselves drawn to the water, perhaps catching sight of the terrain near Jenner Pond or the distant, quiet stretch of Penny Island. Duncans Mills maintains a character that feels detached from the frantic urgency of the modern world, anchored instead by the steady, persistent flow of Orrs Creek and the changing moods of the coastal sky.
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This page provides an embedded street and satellite map of Duncans Mills, California. Coordinates: 38.453803, -123.055001. 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 Duncans Mills includes the ZIP code (95450, 95430), telephone area code (408, 669), county seat of Sonoma County (Santa Rosa), 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. |