Yūbari is a city located in Sorachi Subprefecture, Hokkaido, Japan. As of January 31, 2024, the city has an estimated population of 6,374, with 3,863 households. The total area is 763.20 km². He…Yūbari is a city located in Sorachi Subprefecture, Hokkaido, Japan. As of January 31, 2024, the city has an estimated population of 6,374, with 3,863 households. The total area is 763.20 km². Hemmed in by mountains Yūbari stretches for 25 kilometers along a mountain valley.