TomTom postal code data
File type: GIS, GPS navigation and map file
A .postal file extension identifies a TomTom postal code data file.
The file belongs to TomTom Navigator for Windows Mobile and Windows CE and supports postal-code searches in the navigation software.
File type category:
GIS, GPS navigation and map file
Date updated: October 5, 2026
The .postal file extension is associated with TomTom GPS navigation software and devices. This record refers specifically to postal code data used by TomTom Navigator on Windows Mobile and Windows CE.
A .postal file stores postal codes used with TomTom map data. Navigator uses this supporting data to help locate destinations by postal code; it is not a standalone map or route file.
The format is used by TomTom Navigator on Windows Mobile and Windows CE. It is intended to be used by the navigation software rather than edited directly.
A .postal file is normally installed with the corresponding TomTom map data and loaded automatically by TomTom Navigator on Windows Mobile or Windows CE.
It is not intended to be opened or edited as a document. If the file has been separated from its map and Navigator installation, it may not be useful on its own.
The .postal file is supporting data for TomTom Navigator and is not normally converted independently.
To use postal-code data in another navigation system, obtain data in a format supported by that system rather than attempting to convert this file.
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