Miyazaki Prefecture Tsuno has a humid subtropical climate (Köppen Cfa) characterized by warm summers and cool winters with light to no snowfall.

The village of Tsuno within Koyu District, Miyazaki was established on April 1, 1889 with the creation of the modern municipalities system.

Tsuno has a mayor-council form of government with a directly elected mayor and a unicameral town council of 11 members.

Tsuno, collectively with the other municipalities of Koyu District contributes three members to the Miyazaki Prefectural Assembly.

In terms of national politics, the town is part of the Miyazaki 2nd district of the lower house of the Diet of Japan.