Alameda County

Napa County

Alpine County *

Nevada County

Amador County

Butte County

Calaveras County *

Colusa County *

Contra Costa County

Del Norte County - not required, if within county boundaries.  Required for Crescent City

El Dorado County

Fresno County *

Glenn County * - Business License Required?

Humbolt County *

Imperial County *

Inyo County * - Business License Required?

Kern County *

Kings County **

Lake County *

Lassen County

Los Angeles County

Madera County *

Marin County *

Mariposa County *

Mendocino County *

Merced County

Modoc County

Mono County *

Monterey County