Nuannuan District, a strategic point of Shangshihting Fort which is one of the four forts in Taipei Fu in the Ching period, is one of the early pioneered towns in the northeast Taiwan.

II. Japanese Occupied Era

Taiwan and Penghu were ceded to Japan as a result of the Ching Empire's defeat in the Sino-Japanese War. By then, Nuannuan was subordinated to the Keelung Sub-Ting ["ting" being a large administrative district of the time] of Taipei County, and altered to the 20th district under the jurisdiction of Keelung Ting in 1900. In 1920, with the implementation of the autonomy system in Taiwan, Wutu, Maling, and Nuannuan were merged into Chidu Farmstead under the jurisdiction of Keelung Prefecture, Taipei State.

III. The Initiation of District after the Retrocession

In 1945, Taiwan and Penghu were returned to the mother country after the surrender of the Japanese. In the meantime, although the government altered the "farmstead" to "Hsiang," and the prefecture to subordinated district, Nuannuan was still subordinated to Chitu Hsiang, Keelung District, Taipei County. In Jan. 18, 1947, Chitu Hsiang was officially subsumed to Keelung City, and seven Lis were separated from Nuannuan and Patu of Chitu District for establishing Nuannuan District on Feb. 1, 1949. .

IV. The Development of the Household Registry Office

In July, 1969, according to "Regulations of the Household Registry Reformation in Taiwan during the Period of National Mobilization for the Suppression of the Communist Rebellion," the household registry section was abolished and the household registry office established with the district director served concurrently as the director of the household registry office, and the deputy director of the police station as the deputy director, while the former director of the household registry section as the secretary of the office.

In July, 1973, with the amendment of "Household Registry Regulations," the deputy director of the police station was assigned to serve concurrently as the director of the household registry office.

In July, 1981, the director of the household registry office was nominated as the full-time director holding the concurrent post of the deputy director of the police station under the supervision of the mayor and Hsiang, Town, or District Director.

In May, 1992, after "The Program of the Division of Household Registry and Police Affairs" was approved by Executive Yuan, a section and a division were established under the Department (Bureau) of Civil Affairs of the province/municipal government and county/city government, respectively, for processing household registration business.

V. Population

This district, located in the south of Keelung City, is adjoined to Juifang Town, Taipei County, in the east; Chitu District of this city, in the west; Shihfenliao, Pinghsi Hsiang, in the south; and Jenai District of this city, in the north. As of Sept., 2004, the number of Li was increased to 13, with the district covers an area of 22.8283 square kilometers, and a population of 38,494, including 19,770 male and 18,724 female.