Blaine County lies in north-central region of Montana having an approximate population 9227( 2020 ) residing over 3258 sq mi associated primarily with agriculture sector due to availability flatlands suitable for raising crops particularly North American staple 'wheat' giving them principal source income apart from government services such dairy farming trades . Although there few small enterprises providing all sorts goods from apparel automotive parts but former bulk revenues generated this industry . Many oil reserves also discovered near Hays township creating additional opportunities related petroleum oil extraction industry .