Kasaoka (笠岡市 Kasaoka-shi) is a city located in Okayama Prefecture, Japan. The city was founded on April 1, 1952.
As of August 1, 2011, the city has an estimated population of 53,806, with 22,413 households and a population density of 395.55 persons per km². The total area is 136.03 km².
Crime and safety
The Asano-gumi yakuza syndicate is based in Kasaoka. The Asano-gumi is the only designated yakuza group based in Okayama Prefecture.
Kasaoka is twinned with:
The famous Nihonga artist Ono Chikkyo (小野竹喬 1889-1979) was born here, and there is a museum exhibiting his works.