Daisen is bounded by the Ōu Mountains in the east, the Dewa Mountains in the center of the prefecture in the west, the former town of Kakumagawa between the Omono River and the Yokote River in the south, and the area slightly south of the summit of Mount Oishi in the north.

Akita Prefecture Iwate Prefecture Daisen has a humid continental climate (Köppen climate classification Dfa / Cfa) with large seasonal temperature differences, with warm to hot (and often humid) summers and cold (sometimes severely cold) winters.

Per Japanese census data,[4] the population of Daisen peaked at around the year 1960 and has been in steady decline since then.

During the Edo period, the area came under the control of the Satake clan, who had been relocated to Kubota Domain from their former holdings in Hitachi Province.

After the start of the Meiji period, and the establishment of the modern municipalities system, the area became part of Semboku District, Akita Prefecture in 1878.

In terms of national politics, the city is part of Akita 3rd District of the lower house of the Diet of Japan.