Legacy base map files are available for all of Missoula County. Download from SharePoint. Updates and maintenance for these files ceased in 2013. 

These AutCAD R14© .dwg files are each a single township in size (36 square miles) except for the Missoula Urban Area located in Township 13 North, Range 19 West. This township is mapped by Public Land Survey System (PLSS) sections.   

The base map data was projected in North American Datum of 1927 (NAD27) format up through July 28, 2000. As of July 31, 2000 the data was projected in North American Datum of 1983 (NAD83) format. 

To obtain the latest parcel/cadastral data, visit the Property Information System or download data from SharePoint.