Etymology and distribution of 濱口.

Hamaguchi 【濱口】^{レベル5
About 4,800}  The Japanese surnames etymology dictionary.

Saga-ken , Fukuoka-ken , Nagasaki-ken .

① Saga-ken Ogi-shi Crescent mouth originated from Mikashima (Mikashima). A place name with a record since the Edo period. Saga-ken Saga-shi The inside of the castle was in the Edo period in the Saga Samurai of the Clan office.

② Saitama-ken Tokorozawa-shi Originated Mikajima (Mikajima). A place name with a record since the Warring States Period. The place name was also written as "Mikeshima" and "Mikishima". It was in the Tokyo era as the shrine of the middle Mt. Hikawa Shrine.