Japan Administrative Divisions

Japan is divided into 8 regions (地区), which form the top-level administrative units. These are subdivided into 47 prefectures (都道府県). At the next level, there are 20 designated cities (政令指定都市), 41 core cities (中核市), 40 special cities (特例市), and 1,091 other units across 3 types. The smallest administrative level consists of 743 towns (町), 177 villages (村), and 175 wards (区). Major regions include Chubu, Chugoku, and Hokkaido.

Japan has 4 administrative levels. Level 1: 8 regions (地区). Level 2: 47 prefectures (都道府県). Level 3: 20 designated cities (政令指定都市), 41 core cities (中核市), 40 special cities (特例市), and 1,091 other units across 3 types. Level 4: 743 towns (町), 177 villages (村), and 175 wards (区).

Japan’s administrative system is organized into several levels. The country is divided into prefectures, which are the main administrative units. Each prefecture is further subdivided into municipalities, which include cities, towns, and villages. Some large cities, known as designated cities, are further divided into wards. In rural areas, towns and villages are grouped into districts, which are administrative groupings but do not have their own governing bodies. Regions are commonly used for geographic reference but are not official administrative units.

In Japan, designated cities and core cities both sit at administrative level 3 but serve different functions. Designated cities (政令指定都市) — there are 20 — are typically a larger city or urban area that govern itself independently. Core cities (中核市) — there are 41 — group multiple smaller municipalities under a shared administration.

Japanese administrative divisions have specific local names at each level. In Japanese, regions are called 地区; prefectures are called 都道府県; designated cities are called 政令指定都市; core cities are called 中核市; special cities are called 特例市; cities are called 市; districts are called 郡; special wards are called 特別区; towns are called 町; villages are called 村; wards are called 区. These local-language terms appear in official documents, legal records, and government databases, so matching them correctly is important for data integration and compliance.

Administrative boundaries in Japan change as governments reorganize regions, merge municipalities, or create new administrative units to reflect population shifts and political decisions. Changes most commonly affect the towns level, where Japan currently has 1,095 units. Businesses that rely on Japanese administrative data should use a regularly updated reference dataset to avoid mismatches in geocoding, tax jurisdiction mapping, and compliance reporting.