As of October 1, 2017, the city has an estimated population of 148,720 and a population density of 1,100 persons per km2. The total area is 132.21 km2.
It is home to the Yonago City Museum of Art. Kaike Onsen, which sits along the Miho Bay and is part of Yonago, is said to be the birthplace of the Triathalon in Japan. Since the city has begun to develop into a trade center of note, it has acquired the nickname Osaka in San-in.