Here is a list of certificates and licenses and where you can find or apply for them. 

Birth certificates
The Contra Costa County Clerk Recorder maintains birth certificates from 1905 to present.
Learn more about requesting birth certificates.
Call: 925-335-7900

Death certificates
The Contra Costa County Clerk Recorder maintains death certificates from 1905 to present.
Learn more about requesting death certificates.
Call: 925-335-7900

Marriage licenses
The Contra Costa County Clerk Recorder's office issues marriage licenses. They also conduct ceremonies.
Learn more about applying for a marriage license in Contra Costa.
Call: 925-335-7900

Passports
Walnut Creek Main Post Office offers passport services.
2070 N. Broadway, Walnut Creek
Call: 925-935-0256

Business licenses
Learn more about applying for a business license in Walnut Creek
Call: 925-393-7732

Fishing and hunting licenses
Learn more about applying for a fishing or hunting license.
Call: 916-928-5805