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Geographic Information System
Sierra County Online GIS Map
When you visit Sierra County's online GIS map you can view a map of the county, get census information, and zoom in on assessor's parcels, sites, and land use. You can also search and create reports showing parcel acreage and assessed values.

Directions for Navigating the Online GIS Map (for PC Users)
The first page you will see, "You will be automatically logged on, please wait." The system is loading, no log-in is required.

To access the User's Guide, simply click on the question mark.

Please note that it takes a moment for the map to load after each legend field is selected. The fewer fields chosen, the faster the information will load. To choose a field, place the cursor over the blank box and click the mouse to select. Place the cursor (hand or pointer) over various areas on the map in order to view the information. To get a closer look, place the cursor over the spot you want to view and right hand click the mouse to choose the "zoom in" feature. Choose the "hand" feature to again pan across the map. Using the tool bar (the green field above the map) can also help you navigate.

Acquiring SHAPE Files & Parcel Boundaries

SHAPE files and parcel boundaries are available for purchase from the Sierra County Information Systems Department for $50. For information about purchasing the data, please contact the Assessor's Office via Email or by calling 530-289-3283.

Contact Us
Laura Marshall
Assessor
Email

Assessor's Office
100 Courthouse Square
Room B1
P.O. Box 8
Downieville, CA 95936

Staff Directory

Ph: 530-289-3283

Hours
Monday - Friday
8 a.m. - 5 p.m.

Closed
12:00 - 1 p.m.