Search Category: GIS
Tax Code Area GIS Data
District boundary changes and annexations submitted to the State Tax Commission throughout a calendar year will actually take effect during the next calendar year. For example, requests submitted to the Tax Commission during the calendar year 2026 will take effect in the calendar year 2027.
Data
All county .shp files listed below are provided as a single statewide dataset.
- Statewide data is in Idaho Transverse Mercator (IDTM83).
- Metadata for the statewide dataset may be viewed after downloading the .zip file.
- Tax Code Area (TCA) data may be selected for an individual county and year. The data may be viewed or downloaded by clicking on the filename displayed in the Access column below.
| Year | County | File | Available as |
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GIS Taxing District Maps & Data
District boundary changes and annexations submitted to the Idaho State Tax Commission throughout a calendar year will actually take effect during the next calendar year. For example: Requests submitted to the Tax Commission during the calendar year 2026 will take effect in the calendar year 2027.
Statewide taxing district boundaries may be viewed and data downloaded freely. Individual district data can be selected for a particular year. Metadata for each dataset may be viewed after downloading the .zip file.
| Tax district | Idaho Code | PDF map | Shapefile | District by County |
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Disclaimer
This data is only a representation of the taxing district boundaries and should not be used for legal or surveying applications.
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Proposed Taxing District Changes by County
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| County | Proposed Changes |
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Proposed Taxing District Changes
Taxing district personnel can monitor the status of taxing district change requests that were submitted to the Tax Commission. The data displayed are for proposed changes that would begin to levy on January 1, 2026.
Only submissions received will be shown in the tables below. If the submission doesn’t show below, it hasn’t been received by the Tax Commission. Data are updated each night. Please contact the Tax Commission if the 11″ x 17″ map or List of Changes doesn’t accurately reflect the proposed changes.
Click on the Ordinance field value in the table below for more information. If “Audit” appears in the Ordinance field in the table, then some information may not appear in the Proposal Details table on the page linked to the Ordinance value.
View the list of counties with proposed changesProposed changes for
| District Type | District | Ordinance | Status |
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Taxing District Documents
If you wish to report any errors with this data, or if you have any comments, please email us at gis@tax.idaho.gov. Please click here to visit our webmap.
Ordinance Information
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District Information
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Scanned Documents
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Letter History
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GIS Taxing District Documents
View ordinances and other documentation, related to annexations, consolidations, creations, or dissolutions of tax districts, that are on file at the Tax Commission.
All the documents are in PDF format and may be viewed by clicking on the document name.
Scanned documents for
| District Type | Entity | Process | Year | Document |
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GIS and Property Tax
The Geographic Information Systems (GIS) staff is mandated by Idaho Code to map over 1,245 different taxing districts comprised of more than 3,288 tax code areas (TCA), to ensure that all areas are in compliance with Idaho Statutes and the Tax Commission’s Administrative Rules, and that property taxes are administered fairly and equitably.
GIS educational resources
Map resources
Certification
- We have information for obtaining and maintaining certification.
- Register for Property Tax education
Introduction to GIS and TCA Data
All Idaho property lies within a combination of taxing districts. When taxing district jurisdictional boundaries overlap, they form a unique entity known as a Tax Code Area (TCA).
Taxing districts submit boundary changes and annexations to the Idaho State Tax Commission throughout the year. The GIS staff maps these district boundary changes and assigns the correct Tax Code Area (TCA) for the upcoming year.
District boundary changes and annexations submitted to the Tax Commission throughout a calendar year will actually take effect during the next calendar year. For example: requests submitted to the Tax Commission during the calendar year 2015 will take effect in the calendar year 2016.
You can view and download Tax Code Area data and Tax District maps.
Free software is available for viewing the GIS data files.
County Parcel Maps
Click the buttons below to leave the Tax Commission’s GIS Services site and visit counties’ parcel map websites (in a new window).
Web REST services
Looking for our web REST services?
- NEW !!!!! Note that the service URL was updated June 21, 2023
- URL: https://experience.arcgis.com/experience/6b5a52900b2e42908fbd813ce423adaa/
- Now on ArcGIS Online @
- URL: https://services.arcgis.com/91hXl6NfvLGEi8x5/ArcGIS/rest/services
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Under IACA LINKS