in the early 20th century Considered to have been founded in the 11th century, it was first mentioned, as Zhelezny Ustyug (), in 1252, and in the following centuries was called variously Ustyuzhna Zheleznopolskaya, Ustizhna, Ustizhnya, Ustyuzhnya, and Yustyzhnya. In the 16th–18th centuries it was known mostly as Ustyuzhna-Zheleznaya or Ustyuzhna-Zheleznopolskaya, but since 1808 it had mostly been referred to by its modern name. The origin of the name is unclear, though it may be related to that of
Ustyug. In 1252, Ustyuzhna was a part of the
Principality of Uglich. In 1727, separate
Novgorod Governorate was split off, which included Ustyuzhna as a part of its
Belozersk Province. In 1738, Ustyuzhna was chartered and became the seat of
Ustyuzhensky Uyezd. On August 1, 1927, Cherepovets Governorate was abolished and its territory became
Cherepovets Okrug of
Leningrad Oblast. At the same time, uyezds were abolished and Ustyuzhensky District was established, with the administrative center in Ustyuzhna. On September 23, 1937, Ustyuzhensky District was transferred to newly established Vologda Oblast and remained there ever since. ==Administrative and municipal status==