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 Legislature statute
| 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 [email protected]
- 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 Online Documents
Includes scanned copies of various land records – Boise interurban railroads and the New York Canal.
- 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 |  |
| Ada County Address Points | |
| Ada County boundary limits | |
| Ada County Condo Parcel points | |
| Ada County Condo Parcel Polygons | |
| City limits boundaries in Ada County | |
| Mobile home parks in Ada County | |
| Ada County Parcel points | |
| Ada County Parcel polygons | |
| Records of Survey in Ada County | |
| Ada County Road Centerlines | |
| Ada County Subdivisions | |
| Ada County Subdivisions cut out for cartographic purposes | |
| Ada County Zip Code polygons | |
| Ada County Zoning polygons | |
| Parcel Characteristic tables in DBF format | |