Ada County Assessor Data - Assessor

(Please see https://adacounty.id.gov/assessor for the latest version of this information)

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Ada County Assessor Data

Ada County Assessor’s GIS data is available for free download. Owner names and mailing addresses are not included to comply with the Idaho Public Records Act. Idaho Code 74-120, the Idaho Public Records Act prohibits distribution or sale, for use as a mailing list, any list of persons and their addresses and/or phone numbers without first securing the permission of everyone on the list. The statute is available here: https://legislature.idaho.gov/statutesrules/idstat/title74/t74ch1/sect74-120/

This record is provided on an “as-is” basis, and subject to the following conditions.  No representations or warranties are conveyed with this record regarding its suitability, reliability, or accuracy for any purpose.  Any user of this record accepts all risks of using it, whether such risks are known or unknown, and such user is solely responsible for complying with any and all legal requirements and prohibitions, including, but not limited to, Idaho Code section 74-120, prohibiting the use of this record for marketing or as a mailing or telephone list.  Updates and/or changes to the data used to compile this record may occur at any time. Do not re-distribute this record; further requests for this record should be forwarded to the agency from which it originated.

If you have any questions, please contact
our office at (208) 287-7262 or landrecordsmail@adacounty.id.gov

  • Subdivisions & Surveys This data is now available free, please see more information on how to view and obtain Subs and Surveys on our Online Documents page.
  • Unrecorded Land Records  (View Online Documents)
    Includes scanned copies of various land records – right of way plats, right of way books, Boise interurban railroads, Union Pacific railroads, drainage districts, New York Canal, revision pages, patent books, herd district map.
  • Tract Books  (View Online Documents)
    Includes scanned copies of tract indexes used from mid-1970s until late 1999 (when we made the switch to the digital Property Tax System).
  • GIS Data
    Includes many countywide shapefiles such as parcels, streets, subdivision boundaries, and much more data we maintain available below:
Ada County GIS data descriptions and metadata
Ada County Township/Range/Section outlines Zipfile download
Ada County Address Points Zipfile download
Ada County boundary limits Zipfile download
Ada County Condo Parcel points Zipfile download
Ada County Condo Parcel Polygons Zipfile download
City limits boundaries in Ada County Zipfile download
Mobile home parks in Ada County Zipfile download
Ada County Parcel points Zipfile download
Ada County Parcel polygons Zipfile download
Records of Survey in Ada County Zipfile download
Ada County Road Centerlines Zipfile download
Ada County Subdivisions Zipfile download
Ada County Subdivisions cut out for cartographic purposes Zipfile download
Ada County Zip Code polygons Zipfile download
Ada County Zoning polygons Zipfile download
Parcel Characteristic tables in DBF format Zipfile download