San Mateo County, California Map
Explore San Mateo County, California with this interactive street and satellite map. Browse all 35 cities and towns in San Mateo County below.
Interactive Map of San Mateo County, California
| County | San Mateo |
| State | California (CA) |
| County Seat | Redwood City |
| Country | United States of America |
| Latitude | 37.509146 |
| Longitude | -122.338673 |
| Cities & Towns | 35 |
| Area Codes | 415, 510, 628 |
About San Mateo County, California
San Mateo County occupies a rugged peninsula defined by the quiet tension between the Pacific Ocean and the San Francisco Bay. Its spine is formed by the Santa Cruz Mountains, a range where dense redwood groves hold the morning moisture long after the sun has climbed high. To the west, the coastline is a series of sheer cliffs and tide-swept beaches where the air carries a permanent, bracing salt-chill; to the east, the land descends toward a sheltered bay, trading ocean spray for the stillness of salt marshes and mudflats. The geography is restless, dictated by the San Andreas Fault that runs beneath the dark soil, a hidden seam that pulses through the bedrock and informs the steep, fractured character of the canyons. In the late afternoon, a thick marine layer often rolls over the ridge, swallowing the high canopy and turning the world into a muted, silver-gray theater of shadow and damp earth.
San Mateo County emerged as a political entity in the mid-nineteenth century, carved from the southern portion of a larger district to better serve a population that had grown dense with the arrival of those seeking gold and timber. The county seat moved through several locations before settling in a central valley town that grew around the transit lines of the early railroad, a site chosen for its accessibility to the farming communities and the growing commercial interests near the bay. This history is marked by the transition from Spanish land grants and vast cattle ranches to the arrival of immigrants who worked the soil, planting orchards and fields that once stretched unbroken toward the water. The architecture of the older centers still reflects this era, with wooden facades and narrow streets that seem to hold the echo of horse-drawn carts rattling over packed dirt, even as the modern world rushes past on concrete corridors.
Economic life here has shifted from the extraction of timber and the harvest of artichokes and Brussels sprouts to the high-pressure innovation of global technology firms. The character of the region is one of sharp contrasts, where glass-fronted office campuses overlook fields that still bloom with seasonal crops, and the silence of a protected forest reserve might be broken by the distant hum of a freeway acting as a river of commuters. People navigate this landscape with a practiced efficiency, yet the underlying pace is governed by the light—the way it turns a deep, bruised orange over the coastal bluffs at dusk or illuminates the dry, golden grasses of the hills during the long, rainless summer. It is a place that feels simultaneously anchored in its physical severity and constantly pulled toward the future, a narrow strip of land where the pressure of human ambition is always measured against the persistent, encroaching fog.
Cities and Towns in San Mateo County
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About This San Mateo County Map Page
This page provides an interactive map of San Mateo County, California alongside links to detailed street maps for 35 cities and towns. The county seat is Redwood City. Each city and town map page includes live weather, local news and precise GPS coordinates.
The Search Maps button below the county map opens USGS topographic maps and aerial imagery as base layers, with a labelled U.S. National Grid (USNG) overlay, a distance and bearing tool, and a single-fix GPS readout giving your USNG grid reference and latitude and longitude.
Location data is sourced from the USGS GNIS database and verified by coordinates, not name matching alone.
| Page generated | September 2026 |
| Location data | USGS GNIS database; coordinates matched to 2020 US Census records |
