Napa County, website

Napa County in California uses area codes 510 and 707. This page is a phonebook directory where you will find the physical address and contact information of the most relevant government offices in Napa, including the Clerk’s Office, Sheriff’s Office, and the Health Department. 

Sheriff’s Office

1535 Airport Blvd., Napa, CA 94558

Phone: (707) 253-4440

Superior Court

825 Brown St., Napa, CA 94559

Phone: (707) 299-1100

District Attorney

1127 First Street
Suite C, Napa, CA 94559

Phone: (707) 253-4211

Fax: (707) 253-4041

Clerk-Recorder Office

1127 1st St., Ste. a, Napa, CA 94559

Phone: (707) 253-4105

Fax: (707) 259-8149

Treasurer-Tax Collector

1195 Third Street
Suite 108
Napa, CA 94559
Phone: (707) 253-4327

Fax: (707) 253-4337

Health Department

2751 Napa Valley

Corporate Dr. B, Napa, CA 94558

Phone: (707) 253-4270

Napa County Jail

1125 3rd St., Napa, CA 94559

Phone: (707) 253-4401

Emergency Management

1195 Third Street, Suite B 20
Napa, CA 94559

Phone: (707) 299-1867

Social Services

2261 Elm St., Napa, CA 94559

Phone: (707) 253-4511

Fire Department

1125 Third Street
Hall of Justice, 2nd Floor
Napa, CA 94559

Phone: (707) 299-1464

Department of Education

2121 Imola Avenue
Napa, CA 94559

Phone: (707) 253-6810