The Lake County GIS department provides map products to other county departments and the public to provide information and aid in decision making. This office is responsible for addressing in areas outside of city boundaries, maintaining parcel boundaries for use by the Plat room, and providing various maps as requested. To request a map and pricing, please email
To apply for a new address, please fill out the Address Application found under “Addressing & Forms” above. Once an application is received, it can take 2 to 3 weeks to assign an address, dependent on weather.
Address and property information can be found on our online Address and Parcel Map, or on the Montana Cadastral site. If errors are found on the Montana Cadastral site, please contact the Montana Department of Revenue.
Warren C. Fahner Jr.
Lake County Courthouse
106 4th Ave East Polson, MT 59860