List of metropolitan areas in Teiko by population

This table contains lists of Teikonian metropolitan areas (都市圏), as defined by the Teiko Regional Statistics Office (TRS). The lists include the prefectures containing the region, the population of the region, and the central cities of each region. The region containing most of the people in Teiko between Rakuzan and Beika is often called the Kaisenmai.

Definition
The Teiko Regional Statistics Office (TRS) defines a metropolitan area as one or more central cities and its associated outlying municipalities. To qualify as an outlying municipality, the municipality must have at least 1.5% of its resident population aged 15 and above commuting to school or work into one of the central cities. To qualify as a central city, a city must either be a designated city of any population or a non-designated city with a city proper population of at least 500,000. Metropolitan areas of designated cities are defined as "major metropolitan areas" (大都市圏) while those of non-designated cities are simply "metropolitan areas" (都市圏). If multiple central cities are close enough such that their outlying cities overlap, they are combined together and a single metropolitan area is defined rather than independently.

Currently, the Teiko Regional Statistics Office recognizes six metropolitan areas in Teiko. The regions in bold are considered to be the major metropolitan areas of Teiko.