Core cities are cities of Japan designated by Article 252, Clause 22 and the first term of the Local Government Law.

To be a core city, the city must satisfy the following stipulations:

  1. The population must be over 300,000.
  2. If the population is less than 500,000, the total area must be 100 kmē in area.

The city is designated through the submission from the city and approvals from the assembly of the city nand the prefecture.


As of 2003, the following 35 cities are designated: The following are cities that satisfy the stipulations but not designated.