At the mouth of the Sozu River, which flows in a large arc in the center, there is a small open flatland, where the government office is located.

Ainan has a mayor-council form of government with a directly elected mayor and a unicameral town council of 14 members.

In terms of national politics, Ainan is part of Ehime 3rd district of the lower house of the Diet of Japan.

[7] Ainan's economy is centered on commercial fishing, with agriculture and horticulture player smaller roles.

Ainan is known to produce a variety of products, including bonito, red snapper, yellowtail, oysters, noble scallops, and citrus fruits mikan.

The town has one public high school operated by the Ehime Prefectural Board of Education.

The festival is celebrated all over town, from the larger parts of Misho to the smallest hamlets in Nishiumi.

Adults also carry mikoshi and Ushi Oni (a large cow demon float) around town.