Katsuyama is a city located in Fukui Prefecture, Japan. As of 31 May 2018, the city has an estimated population of 23,527, with 7,973 households, and a population density of 93 persons per km2. The total area of the city was 253.88 square kilometres (98.02 sq mi). Katsuyama was the ninth-best ranking city in a ranking that compared health and sanitation in cities around the world published in April 2007.

Hakusan is a city located in Ishikawa Prefecture, Japan. As of 31 January 2018, the city had an estimated population of 113,375 in 43246 households, and a population density of 290 persons per km2. The total area of the city was 754.93 square kilometres (291.48 sq mi). It is the second-most populous city in Ishikawa Prefecture after Kanazawa.