The jurisdictional area corresponds to the whole area of Ishikari, Teshio, Tokachi and Hidaka Provinces, four counties of Kitami Province (Soya County, Esashi County, Rishiri County and Rebun County), nine counties of Shiribeshi Province (Otaru County, Takashima County, Oshoro County, Yoichi County, Furubira County, Shakotan County, Bikuni County, Furuu County and Iwanai County), and seven counties of Iburi Province (Abuta County, Usu County, Muroran County, Horobetsu County, Shiraoi County, Yufutsu County and Chitose County), according to ryoseikoku.
管轄地域は令制国に従えば、石狩国・天塩国・十勝国・日高国の全域と北見国の宗谷郡・枝幸郡・利尻郡・礼文郡の4郡、後志国の小樽郡・高島郡・忍路郡・余市郡・古平郡・積丹郡・美国郡・古宇郡・岩内郡の9郡、胆振国の虻田郡・有珠郡・室蘭郡・幌別郡・白老郡・勇払郡・千歳郡の7郡（即ち山越郡以外の全域）に相当する。