Explore Sonoma County, California, with this detailed map showing major cities, towns, highways, state roads, rivers, and county boundaries. Located in Northern California, Sonoma County is known for its scenic Pacific coastline, vineyards, valleys, and diverse landscapes. The map highlights important places including Santa Rosa, Petaluma, Healdsburg, Windsor, Sonoma, Sebastopol, Cloverdale, and other communities throughout the county. Major transportation routes and local roads help users understand connections between towns and neighboring counties, including Marin, Napa, Mendocino, Lake, and Solano. Rivers and coastal areas are also clearly represented for improved geographic reference. This Sonoma County map is useful for education, travel planning, business, research, presentations, and general geographic understanding. It provides a clear visual overview of the county’s location, settlements, transportation network, and surrounding natural features.
| Fact | Details |
|---|---|
| Official Name | Sonoma County |
| State | California |
| Country | United States |
| Founded | February 18, 1850 |
| Incorporated | Not applicable (county) |
| Population | 486,444 (2025 estimate) |
| County | Santa Rosa |
| Area | 1,768 sq mi (4,580 sq km) |
| Time Zone | Pacific Time Zone (PT) |
| ZIP Codes | 94922–95497 (various ZIP Codes) |
| Area Code | 707 |
| Known For | Wine country, vineyards, Pacific coastline, redwood forests and the Russian River |
| Major Airport | Charles M. Schulz–Sonoma County Airport (STS) |
| Climate | Mediterranean climate with warm, dry summers and mild, wet winters; cooler along the coast |
| Nickname | Wine Country; Sonoma Valley is known as the “Valley of the Moon” |
| Major Highways | U.S. Route 101, State Route 1, State Route 12, State Route 116 |
| Nearby Border | Mendocino, Lake, Napa and Marin counties; Pacific Ocean and San Pablo Bay |
| Major Attractions | Sonoma Coast, Armstrong Redwoods, Russian River, Sonoma Plaza, wineries and vineyards |