At the time of the municipality's disestablishment, Kodisjoki was located in the province of Western Finland, now it is in the Satakunta region.

Kodisjoki bordered Rauma, Lappi, Laitila and Pyhäranta.

[1] The village consists of multiple parts: Ahteri, Heikolankulma, Heinilä, Isopuoli, Sahankulma, Vuorela and Ylöjänpää.

Its name is derived from a dialectal word kodiksin/kodismaa[3] referring to a garden or a small field next to a house.

Kodisjoki became a separate municipality in 1896, but due to its small size, it was still ecclesiastically subordinate to Laitila.