Napa County GIS Portal

Search for Napa County CA GIS maps. A GIS map search can provide information like county maps, town maps, city maps, local maps, property maps, parcel maps, plat maps, public property, property tax assessments, flood zones, zoning boundaries, geographic information, historical maps, and property tax information.


Napa County Assessor Offices are charged with determining the value of taxable property in their county or local area in order to calculate Napa County property taxes. In addition to property values, Assessors maintain detailed county and local maps, including Geographic Information Science (GIS) maps. These Napa County GIS maps can show public property, parks, property divisions, and roads, as well as property assessments and property taxes in Napa County California. These maps can also include place names, bodies of water, flood zones, property zones, and other geographic information. Some Assessors may keep historic GIS maps that include historic property tax assessments. These maps may be available on the Napa County Assessor Office website.

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


Napa County Town and City Halls provide municipal services for their town or city, including preserving vital records and maintaining records on their jurisdiction such as Napa County GIS maps. The GIS maps at a Napa County Town or City Hall can include property boundaries, public property, unclaimed parcels, and roads, as well as appraisal values for properties and property tax assessments in Napa County California. These GIS maps may also show population information, place names, zoning boundaries, bodies of water, flood zones, and other geographic information. Some Town and City Halls also have historical maps of their area. These maps are often available to the public on the Napa County Town and 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


Napa County Clerk Offices maintain public records for a county or local government, which includes GIS maps. These maps provide detailed information on the area, including Napa County property maps that show boundaries, public property, property divisions, and in some cases, population information in Napa County California. They may also include property value assessments and property tax rates. Napa County GIS maps can show place names, bodies of water, zoning information, flood zones, and other geographic information. Clerks may also have historic GIS maps from the USGS or other organizations, and these maps are often available online 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


Napa County Recorders of Deeds keep real estate records to ensure the accuracy of property and land records. In addition to deeds, Recorders of Deeds also have detailed county and local maps, including Napa County GIS maps that show property lines, building information, public property, unclaimed parcels, as well as property value assessments and property tax information. These GIS maps may also include place names, zoning boundaries, bodies of water, flood zones, and other geographic information in Napa County California. The Recorder of Deeds may also have historic GIS maps. These maps are often available on the Napa County Recorder of Deeds website.

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