Napa County GIS Data (California)

Search for Napa County, CA GIS data. A GIS data search can provide information on GIS maps, property lines, county lines, city lines, public property, elevations, flood zones, school boundaries, earthquake zones, property appraisal values, erosion, water pollutants, topography, soil composition, sewers, public utilities, building hazards, population information, demographic information, place names, public property, parks, campgrounds, trails, trail maps, historic maps, historic GIS maps, town maps, county maps, city maps, and neighborhood boundaries.


An Assessor Office is responsible for appraising the taxable property in an area in order to calculate property taxes in Napa County, California. As part of this job, Napa County Assessors maintain detailed county and local maps, including Geographic Information Science (GIS) data. These Napa County GIS maps typically include property divisions, plots, buildings, property appraisal values, and property taxes. They may also include public property, parks, roads, place names, bodies of water, and other local geographical information, as well as flood zones, county zone lines, and school boundaries. These maps can be useful for a number of reasons, including buying and selling property. Assessors may provide online access to their Napa County GIS data on their websites.

Napa County Assessor's Office Napa CA 1127 1st Street 94559 707-253-4467


A Town or City Hall provides municipal services for their town or city, including keeping vital records and maintaining documents on their jurisdiction such as maps with GIS data in Napa County, California. These GIS maps typically include property boundaries, real estate appraisal values, Napa County property tax assessments, public property, and unclaimed parcels. The maps may also show place names, Napa County zoning boundaries, bodies of water, and flood zones, as well as population and demographic information. Some Town and City Halls also maintain historical maps of their area. These maps are often available on the Town or City Hall website.

American Canyon City Hall American Canyon CA 4381 Broadway Street 94503 707-647-4360

Calistoga City Hall Calistoga CA 1232 Washington Street 94515 707-942-2800

Napa City Hall Napa CA 1600 1st Street 94559 707-257-9646

Napa County City Hall American Canyon CA 300 Crawford Way 94503 707-647-4360

St Helena City Hall St. Helena CA Ste A, 1480 Main St 94574 707-967-2792

Yountville Town Hall Yountville CA 6550 Yount St 94599 707-944-8851


A Building Department creates and enforces building codes and zoning regulations in order to ensure the construction of safe buildings in Napa County, California. As part of that job, Building Departments maintain GIS data that can include Napa County GIS maps on the topography, elevation, soil composition, and flood zones for the local area. This information can be important for adhering to building codes and meeting zoning rules. These GIS maps may also show Napa County parcels, lots, subdivisions, and tracts of land, as well as sewers, public utilities, and other building hazards. GIS data may be available on the Building Department website.

American Canyon Planning Department American Canyon CA 4381 Broadway Street 94503 707-647-4336

Calistoga City Building Department Calistoga CA 1232 Washington Street 94515 707-942-2827

Napa Building Department Napa CA 1600 1st Street 94559 707-257-9540

Napa County Building Department, Planning, Zoning and Permits Napa CA 1195 3rd Street 94559 707-253-4417

Napa County Zoning Napa CA 1195 3rd Street 94559 707-253-4416

Napa Planning Department Napa CA 1600 1st St 94559 707-257-9530

Saint Helena Planning Department St. Helena CA 1480 Main Street 94574 707-968-2659

St Helena Building Department St. Helena CA 1480 Main Street 94574 707-968-2657


A Clerk Office maintains public records for a county or local government, including GIS data in the form of maps. These GIS maps provide detailed information such as property boundaries, roads, public property, parks, and in some cases, population and demographic information. GIS data can also show Napa County property value assessments, property taxes, flood zones, zoning boundaries, and earthquake zones, as well as place names, bodies of water, and other geographic information. Clerks may also have historic GIS maps from the USGS or other organizations. Napa County GIS data is often accessible through the Clerk Office website.

Calistoga City Clerk Calistoga CA 1232 Washington Street 94515 707-942-2805

Napa County Clerk Napa CA 1195 3rd Street 94559 707-253-4421


An Auditor Office provides oversight for government agencies, including evaluating the performance of government offices and their compliance with laws, rules, and regulations in Napa County, California. Auditors also investigate corruption and fraudulent activities. Auditor Offices maintain a number of records related to their local area, which can include GIS data that shows Napa County property boundaries, city or county lines, flood zones, earthquake zones, and property taxes. These Napa County maps may also provide place names, bodies of water, and other geographic information. Auditors may provide online access to their GIS maps.

Napa County Auditor Napa CA 1195 3rd Street 94559 707-253-4551


A Recorder of Deeds keeps real estate documents to ensure the accuracy of property and land records in Napa County, California. In addition to filing deeds that provide information on property sales and transfers, Recorders of Deeds also have detailed county and local maps, including Napa County GIS data. These maps can include property lines, building information, unclaimed parcels, property value assessments, and property tax information. They may also show Napa County place names, flood zones, zoning boundaries, neighborhood lines, bodies of water, and other geographic information. The Recorder of Deeds may provide access to GIS data on its website.

Napa County Recorder of Deeds Napa CA PO Box 298 94559 707-253-4246


A Soil and Water Conservation Office provides information on the conservation and management of natural resources in Napa County, California. They are also responsible for developing, implementing, and enforcing policies to protect these natural resources. Napa County Soil and Water Conservation Offices maintain GIS data in the form of maps to monitor soil and water, and these Napa County maps can show ground and surface water, stormwater runoff, irrigation, erosion, flood zones, and sources of pollution. These maps can be important for buying, selling, or improving property, and they may be available through the Soil and Water Conservation Office website.

Napa County Soil and Water Conservation Napa CA 804 1st Street 94559 707-259-8600