Explore Bethel Island, California, with this interactive street and satellite map.
| City | Bethel Island |
| State | California (CA) |
| County | Contra Costa County |
| Country | United States of America |
| Timezone | Pacific Time (America/Los_Angeles) |
| Latitude | 38.02813 |
| Longitude | -121.629851 |
| Population | 2,131 |
| Density | 156.7 /km² |
| Incorporated | N/A |
| ZIP Code | 94511 |
| Area Code | 510 |
| County Seat | Martinez |
| School District | Liberty Union High School District |
Bethel Island emerges from the flat, reclaimed peat soils as a low-lying expanse defined by the patient intersection of land and water. It lies 4.1 miles east-northeast of Oakley, CA (from Oakley, CA: bearing 73°T), and is situated 9.0 miles east of Antioch. The horizon is dominated by the distant, hazy silhouettes of the Coast Ranges, which catch the fleeting violet hues of dusk, while the air here remains heavy with the scent of damp reeds and the salt-tinged breeze drifting from the nearby coastline. Water dictates the rhythm of the terrain, carving intricate patterns through the surrounding marshes and creating a landscape where the boundary between solid ground and shifting tide feels perpetually porous. Visitors to Summer Lake Community Park find a quiet respite among the local flora, observing the way the golden Pacific light flattens against the water, turning the surface into a sheet of hammered copper before the evening fog rolls in to obscure the view of Lone Tree Valley.
Bethel Island maintains a character defined by its maritime heritage and the persistent engineering required to keep the encroaching waters at bay. The local economy remains anchored in the seasonal cycles of the water, with marinas and boating services serving as the primary pulse of a lifestyle that favors the slow navigation of Sand Mound Slough over the frantic pace of the mainland. While the reclamation of this land transformed its earlier marshy state into a space for agricultural and recreational endeavor, the legacy of the region is etched into the levees that guard the perimeter. Beyond the immediate reach of these banks, the expanse of Big Break serves as a reminder of the shifting geography, while the distant, calm waters of Clifton Court Forebay offer a stark contrast to the turbulent, working nature of the sloughs that define daily life for those who call this island home.
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This page provides an embedded street and satellite map of Bethel Island, California. Coordinates: 38.02813, -121.629851. 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 Bethel Island includes the ZIP code (94511), telephone area code (510), county seat of Contra Costa County (Martinez), and school district assignment (Liberty Union High School District).
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 | 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. |