Geographic Information Systems

Geographic Information Systems (GIS) is a technology that combines information with maps to visualize the landscape in a variety of unique ways. ISD GIS produces high-quality cartographic images and applications to assist a wide variety of customers with day to day work processes and decisions.

ISD GIS maintains the countywide base map (such as addresses, streets, and parcels) and supports programs such as the Fire Run Book, CAD 9-1-1 system, Decennial Census, and Sonoma County Vegetation Mapping & LiDAR Program (Sonoma Veg Map).

GIS coordinates the development of a shared enterprise system and provides support to over twenty county agencies, several incorporated cities, and special districts.

If you have questions about GIS products and services please contact us

Sonoma County GIS

Sonoma Veg MapMapping and spatial data management is a coordinated effort between multiple departments and agencies within the County of Sonoma.

Explore interactive maps and GIS data:

Contact Information

Information Systems Department

Business Hours
Monday – Friday
8:00 AM – 5:00 PM
Contact us by Phone
GIS Central
2300 Professional Drive
Santa Rosa, CA 95403
38.462561, -122.72432

County Employees

We're here to Help!

All requests for ISD begin by opening a Service Request. You may open an SR by using our Service Portal, or by emailing or calling the Service Desk.

Service Portal

Email the Service Desk

Call the Service Desk (x2030)

Track your Requests

Maps & GIS

Sonoma County GIS

Spatial Understanding for Better Decisions


Find interactive maps and applications, GIS data, and related online content.