GIS Mapping Tax Code Areas

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 2023 will take effect in the calendar year 2024.


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.