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Local Government System (Chihō Kansei, 地方官制)

Under the ritsuryō system — the legal and administrative code that governed Japan from the late 7th century — the central government in Heiankyō (Kyoto) deployed offices and officials throughout the country to govern the provinces. The system centred on the kokushi (provincial governors) dispatched to each province, supported by gunji (district officials) and special agencies, forming a nationwide administrative structure.

Provincial Governors (Kokushi, 国司)

The kokushi followed the four-tier official structure (shitōkan, 四等官). This same four-tier hierarchy — chief, deputy, controller, and recorder — applied to every government office under the ritsuryō system, with each office using its own specific kanji for the titles.

Tier	Provincial title	Duties
Kami (長官, Chief)	守kami	Supreme authority over ceremonies, administration, justice, and military affairs.
Suke (次官, Deputy)	介suke	Assists the chief.
Jō (判官, Controller)	大掾daijō ＞ 少掾shōjō	Review of official documents.
Sakan (主典, Recorder)	目sakan	Drafting and recording official documents.

Provincial Grades

Each province was graded according to its productive capacity as Taikoku (大国, Major), Jōkoku (上国, Upper), Chūkoku (中国, Middle), or Gekoku (下国, Lower).

Court Ranks and Provincial Offices

Each official held a court rank (位階, ikai), a numbered grade that determined their place in the imperial hierarchy. Ranks ran from 1st (highest) to 8th (lowest), and each rank was divided into Senior (正, shō) and Junior (従, ju), then further into Upper (上) and Lower (下) — giving 30 grades in total. The office an official could be appointed to depended on their rank, and the requirements also varied by the grade of the province.

District Officials (Gunji, 郡司)

Under the Taihō Codes, each province was divided into the three-level administrative hierarchy of province, district (gun), and village (ri; later gō). The gunji worked under the kokushi to handle the administration, tax collection, and minor judicial matters of the district (roughly equivalent to a modern county). Positions were filled by locally influential figures with knowledge of the area, held for life, and in practice often passed down hereditarily.

Special Regional Agencies

Agency	Description
Kageyushi (勘解由使)	A special inspector established in the early Heian period by Emperor Kanmu to oversee the handover of provincial offices when governors changed. Outgoing governors were required to submit a geyuijō (解由状, a formal transfer-of-office document) to the incoming governor, and the Kageyushi verified these records to prevent corruption. The Kageyushi was a ryōge no kan (令外官) — an office not stipulated in the original ritsuryō codes but established by imperial decree as the need arose.
Dazaifu (大宰府)	The government headquarters for Kyushu, located in Chikuzen Province. Because Kyushu was both distant from the capital and closest to the Korean Peninsula and China, it served as Japan's front line for foreign affairs, coastal defence, and international trade. The Dazaifu also supervised the kokushi of all Kyushu provinces, functioning as a regional government in its own right — so much so that it was nicknamed Tō no Mikado (遠の朝廷), "the far court." Like the central ministries, it followed the four-tier shitōkan structure, though with its own titles: the sōchi (帥, chief) was typically a high-ranking noble who remained in the capital, leaving the dainī (大弐, deputy) as the actual administrator on the ground.