Ugocsa was an administrative county (comitatus) of the Kingdom of Hungary.These part were assigned to the administrative branch offices of Máramaros.In 1940, by the Second Vienna Award the southern part as well returned to Hungary thus the county was recreated with a modified territory, with the parts also included earlier to the administrative branch offices of Máramaros.Since 1991, when the Soviet Union split up, the Zakarpattia Oblast has been part of Ukraine.In the early 20th century, the subdivisions of Ugocsa county were: Vynohradiv is now in Ukraine; Halmeu is now in Romania.
Ethnic map of the county with data of the 1910 census (see the key in the description).