What is GIS?
Geographic Information Systems (GIS) integrates hardware, software, and data for capturing, managing, analyzing, and displaying all forms of geographically referenced data. GIS allows us to view, understand, question, interpret, and visualize data in ways that reveal relationships, patterns, and trends in the form of maps, globes, reports, and charts. GIS helps you answer questions and solve problems by looking at your data in a way that is quickly understood and easily shared.
If you would like to learn more about GIS, please visit the ESRI website.
The GIS Division of the Planning Department utilizes numerous data sources in order to support the needs of other county departments, partnering agencies/organizations, and citizens. The collection, management, and presentation of geographic data assists in parcel, tax, and land records, disaster response -- like in the case of wildfires and floods --, planning of public recreation areas, and much more.
The County departments we help support include:
- Public Works
- Health and Human Services
- Building
- Environmental Health
- Planning
- Sheriff's Office
- Assessor/Recorder
Mariposa County GIS hosts its publicly available data and resources on its own ArcGIS Hub Site. Here, you can find data related to:
- Transportation
- Recreation
- Parcels and District Boundaries
- Wildfires
- County History
- Voting and Elections Maps
- Public Information
This Hub Site also allows you to download PDFs of numerous maps that Mariposa County GIS has published. If you aren't able to find the data you are looking for, you can use the Data Request Form to let us know how we can help you with your geospatial data needs.
Contact Information & Data Requests
Please email questions to or call the Mariposa County Planning Department at 209-966-5151.
Visit the Mariposa County ArcGIS Online Homepage to explore active county GIS resources and data.
Recent Projects & Maps
- Outdoor Recreation App - Desktop and Mobile friendly app for exploring the wonderful public recreation opportunities in Mariposa County.
- Public Zoning Lookup Tool - GIS dashboard useful for determining the zoning for a parcel and learning about the permitted uses for each zone type.
- Public Information Map -- Best used to check for road closures, active fires, evacuation zones, and power outages during emergency incidents.
- Mariposa County Historical Sites Interactive Map Tour -- Guide your own tour around Mariposa County highlighting numerous historic sites.
- Public GIS Viewer -- Contains all publicly available information layers.
- 23 Years of Fire History -- Explore notable fires that have occurred in and around Mariposa County since 2000.
- Elections Webmap
- County Address Data Management (in progress) - comprehensive geographic digitization of decades of County address and roads records in order to better serve Emergency Responders and enhance community protection.
