County Departments



Small Admin Building

County Departments

You will find here a list of Napa County departments. Click on a department to see the divisions, programs and services contained within. If you are not sure which department you need, try a search, or use the Info for Residents, Info for Businesses or Info for Visitors tabs in the navigation bar at the top of the page.  For links to other local, state and federal government agency sites, visit the Government page.

Agricultural Commissioner's Office
The Agricultural Commissioner/Sealer of Weights and Measures is concerned with farming, pests and relations with the agricultural community in Napa County.

Information and links regarding your Napa County property and property tax

The Auditor-Controller allocates property tax payments and handles budget, payroll, financial reporting and audits for the County and selected other special districts and agencies.

Board of Supervisors
Information about the Board and each of its members.

Child Support Services
Child Support Services establishes and enforces local child support court orders.

Corrections has jurisdiction over the Napa County Jail and its inmates.

County Counsel
County Counsel serves as the legal counsel to the Board of Supervisors and the County.

County Executive Office
Visit the County Executive Office and its programs, including Emergency Services, Clerk of the Board and Public Information.

County Fire Department
The County of Napa contracts with the California Department of Forestry (CAL FIRE) for fire protection services as the Napa County Fire Department.

District Attorney
The District Attorney prosecutes accused criminals on behalf of the citizens of Napa County.

Elections and related activities are managed by the Elections Division.

Health and Human Services Agency
Health and Human Services Agency

Napa County Library
The County Library system operates a main library in Napa and branches in Calistoga, Yountville and American Canyon.

Planning, Building & Environmental Services
Planning, Building & Environmental Services is your NEW Department for consolidated permitting and environmental health needs.

Adult and juvenile probation and counseling programs.

Public Defender
The Public Defender’s office provides legal representation for adults and juveniles who are charged with criminal offenses and are unable to hire private counsel.

Public Works
Public Works provides for the construction, maintenance and improvement of facilities and infrastructure within the unincorporated area of Napa County.

Recorder-County Clerk
Official records including birth, death and marriage certificates, and fictitious business name (FBN) filings.

Sheriff's Office
The County Sheriff's office provides law enforcement for the unincorporated areas of the County, as well as police services for American Canyon and Yountville.

Treasurer-Tax Collector
Collects taxes, invests funds, disburses payments and handles collections for many county agencies.

UC Cooperative Extension
Provides services and education in agriculture, natural resources, youth development, and family and consumer sciences.