Data List

Research and find GIS data through the Montana State Library Geographic Information Data List.

Montana Spatial Data Infrastructure (MSDI)

Official GIS layers for the State of Montana.  The Montana Spatial Data Infrastructure or MSDI contains 14 spatial framework layers.

Web Services

Web services are a convenient way to access GIS data over the internet. Using the web services below, GIS users can connect to and use a variety of datasets in ArcGIS or other applications just as they would a shapefile or any other GIS dataset – but without having to download the data..

Montana GIS Metadata Portal

Montana's searchable index of data files that may be used with Geographic Information System software to make maps or analyze location-based data. Some of the files may be map images, air photos, or database tables that are usable with other types of software.