Place
- California, Northern26
- Humboldt County (Calif.)21
- Santa Clara County (Calif.)17
- San Francisco Bay Area (Calif.)14
- Sierra Nevada (Calif. and Nev.)14
- Alameda County (Calif.)13
- Contra Costa County (Calif.)13
- Marin County (Calif.)13
- Napa County (Calif.)13
- San Francisco County (Calif.)13
- San Mateo County (Calif.)13
- Solano County (Calif.)13
- Sonoma County (Calif.)13
- San Francisco Bay (Calif.)11
- Africa6
- Asia6
- Australasia6
- Central America6
- Europe6
- North America6