is a city in à Âita Prefecture. , the city had an estimated population of 33,556 in 15883 households, and a population density of 110 persons per km<sup>2</sup>. The total area of the city is .
Yufu is located almost in the center of à Âita Prefecture, with high mountains such as Mt. Yufudake (1583 meters) and Mt. Jogatake in the north, and Mt. Kurodake, Mt. Hanamure, and Mt. Toki in the south. The urban area is concentrated near the flatland formed by the alluvial fan of the à Âita River that flows through the center of the city, with the former Yufuin Town near the headwaters and Yufuin Basin, the former Shà Ânai Town on the left and right of the river terraces in the middle, and the former Hasama Town on the downstream and plain areas. Some areas of the former Shà Ânai Town and former Yufuin Town have been designated as Aso Kujà « National Park. Mizuki Pass, located on the border with Kokonoe Town along Japan National Route 210, forms one of the central watersheds in Kyushu, separating the à Âita River water system on the Yufu City side and the Chikugo River water system on the Kokonoe Town side. There are five hot springs located throughout the city, including the nationally famous Yufuin Onsen, and most of the city has been designated as the national hot spring resort, Yufuin Onsenkyo.
à Âita Prefecture
Yufu has a humid subtropical climate (Köppen climate classification Cfa) with hot summers and cool winters. Precipitation is significant throughout the year, but is somewhat lower in winter. The average annual temperature in Yufu is . The average annual rainfall is with June as the wettest month. The temperatures are highest on average in August, at around , and lowest in January, at around . The highest temperature ever recorded in Yufu was on 10 August 2013; the coldest temperature ever recorded was on 3 February 2012.
Per Japanese census data, the population of Yufu in 2020 is 32,772 people. Yufu has been conducting censuses since 1920.
The area of Yufu was part of ancient Bungo Province. From the Heian period, the area was dominated by descendants of the kokushi of the province, the Ogami clan. After the Kamakura period, the Ogami frequently clashed with the Kamakura shogunate-appointed shugo, the à Âtomo clan; however in the Sengoku period both clans joined forces to fight the invading Shimazu clan. During the Edo period, the area was largely under the control of Oka Domain. Following the Meiji restoration, the villages of Kitayufu and Minamiyufu within Hayami District, à Âita were established on May 1, 1889 with the creation of the modern municipalities system. The two villages merged to form Yufuin Village on April 1, 1936, which was raised to town status on April 1, 1948. The city of Yufu was established on October 1, 2005, from the merger of the towns of Hasama, Shà Ânai, and Yufuin (all from à Âita District).
Yufu has a mayor-council form of government with a directly elected mayor and a unicameral city council of 20 members. Yufu contributes two members to the à Âita Prefectural Assembly. In terms of national politics, the city is part of the à Âita 2nd district of the lower house of the Diet of Japan.
The economy of Yufu is centered around agriculture and tourism it is many hot spring resorts.
Yufu has ten public elementary schools and three public junior high schools operated by the city government, and one public high school operated by the à Âita Prefectural Board of Education. The prefecture operates one special education school for the handicapped.