|Number||Census Class & Code||Description|
|128||Incorporated Places - C1||An active incorporated place that does not serve as a county subdivision equivalent.|
|1||Incorporated Places - C3||A consolidated city.|
|7||American Indian Areas - D1||Legal federally recognized American Indian area consisting of reservation and associated off-reservation trust land.|
|1||American Indian Areas - D2||Legal federally recognized American Indian area consisting of reservation only.|
|23||American Indian Areas - D7||A tribal subdivision.|
|54||Counties and County Equivalents - H1||An active county or equivalent feature.|
|2||Counties and County Equivalents - H6||A county that is coextensive with an incorporated place, part of an incorporated place, or a consolidated city and the governmental functions of the county are part of the municipal govenment.|
|192||Inactive or Nonfunctioning Primary County Divisions - Z5||A statistical county subdivision.|
|2||Land Grants & Other - N/A||Land Grants and Other Unclassified Civil Features|
The Demographic Data for the 955 Montana cities, towns, counties, ZIP Codes and Census Designated Places (CDPs) profiled in this gazetteer is updated annually. Last Update: July 1, 2014.
The ZIP Code maps and the data regarding the number of residential and business addresses in each ZIP Code are updated four times per year. Last Update: November 1, 2014.
The information on the 77,486 Montana Physical, Cultural and Historic Features is updated six times per year. Last Update: December 2, 2014.
The School Attendance Zone Maps for 852 Montana public schools are updated four times per year. Last Update: October 6, 2014.