(1) The center shall prepare redistricting population data that reflects an incarcerated individual at the individual's last known address pursuant to 5-1-206. (2) The districting and apportionment commission shall use the data to form congressional, state house, or state senate districts. (3) A local government shall use the data to form local government districts that are based on population. An incarcerated individual whose address prior to incarceration is unknown, as determined pursuant to 5-1-206, may not be included in the calculation used to determine the ideal population of a local government district.
Redistricting Population Data
Mont. Code Ann. § 5-1-205, under Inmate Data for Redistricting.
Mont. Code Ann. § 5-1-205