Explore Castro Valley, California, with this interactive street and satellite map. You can “grab” the Castro Valley, CA 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.
Map search is available for a limited number of queries per session to manage costs. Be specific — search precisely for best results.
| City | Castro Valley |
| State | California (CA) |
| County | Alameda |
| Country | United States of America |
| Timezone | Pacific Time (America/Los_Angeles) |
| Latitude | 37.694097 |
| Longitude | -122.086352 |
| Population | 65,001 |
| Density | 1498.5 /km² |
| Incorporated | N/A |
| ZIP Code(s) | 94546, 94552 |
| Area Code | 510 |
| County Seat | Oakland |
| School District | Castro Valley Unified School District |
Castro Valley is a locality in Alameda County, California, United States. It has a population of 65,001. The population density is 1498.5 people per km². Castro Valley is located at 37.6941°N, 122.0864°W. It observes the Pacific Time (America/Los_Angeles) timezone. ZIP code: 94546.
Castro Valley breathes with a gentle, rolling green that spills down from the chaparral-clad hills, a landscape shaped by ancient creeks that whisper through the valley floor. It lies 1.8 miles north of Hayward, CA (from Hayward, CA: bearing 350°T), and is situated 4.4 miles east-south-east of San Leandro. The air here, especially as the sun begins its slow descent, carries the faint, sweet perfume of eucalyptus and damp earth, a fragrance that clings to the very stones and weathered fences. Sunlight, when it breaks through the common coastal haze, paints the broad, open spaces in hues of burnished gold, illuminating the scattered live oaks that stand like stoic sentinels against the encroaching sky. The terrain itself offers a quiet invitation to explore, with slopes that invite the eye upward and open expanses that promise a sense of spaciousness, a welcome contrast to the more tightly packed urban centers that lie just beyond its immediate embrace. The story of Castro Valley is one of agricultural roots, where ranches once stretched across these fertile lands, their prosperity tied to the bounty of the soil and the steady flow of water from the surrounding hills. This legacy is still visible in the occasional remaining farmstead and the enduring agricultural zoning that protects pockets of open land. The local economy, while now diversified, retains a connection to its past, with a practical, working-class spirit that finds expression in its local businesses and the steady hum of daily life. A notable feature of Castro Valley is its commitment to green spaces, with numerous parks and recreational areas that serve as vital lungs for the community, offering residents ample opportunity to connect with the natural beauty that defines this particular corner of Alameda County.
Loading news…
Loading news-world…
Loading news-world…
This page provides an embedded street and satellite map of Castro Valley, California — switch between views using the small square in the bottom left-hand corner of the map. Coordinates: 37.694097, -122.086352. 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 Castro Valley and Alameda County.
Detailed location data for Castro Valley includes the ZIP code (94546), telephone area code (510), county seat of Alameda County (Oakland), and school district assignment (Castro Valley Unified School District). 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 Castro Valley 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. |