July 1 is the annual deadline to submit a sworn statement of circulation to your county and city clerk and recorder.
This link will provide you with the details of the printing contract process for counties.
Montana Code: http://leg.mt.gov/bills/mca/18/7/18-7-411.htm
County sworn statement of circulation:County Sworn Statement
This link will provide you with details of the printing contract process for cities/municipalities.
Montana Code: http://leg.mt.gov/bills/mca/7/1/7-1-4127.htm
City sworn statement of circulation:City Sworn Statement