page_title: Sopron County
section_title: History
hierarchical_section_title: Sopron County / History
caption_attribution_description: Magyar: Győr-Sopron megye kialakítása 1950-ben. 1 Vas megyétől Győr-Sopronhoz, 2 Sopron megyétől Vashoz, 3 Komárom megye, 4 Győr-Sopron megye 1950-től, 5 mai megyehatár, 6 megszűnt 1949-es megyehatár
context_page_description: Sopron was an administrative county of the Kingdom of Hungary. Its territory is now divided between Austria and Hungary. The capital of the county was Sopron.
context_section_description: The Sopron comitatus arose as one of the first comitatuses of the Kingdom of Hungary.
  In 1920, by the Treaty of Trianon the western part of the county became part of Austria, while the eastern part became a part of Hungary. In 1921, it was decided by referendum that the city of Sopron and eight surrounding settlements would join Hungary instead of Austria.
  
  In 1950, Sopron county merged with Győr-Moson county to form Győr-Sopron county, while a small part of Sopron county went to Vas county. The county was renamed to Győr-Moson-Sopron county in 1990.
caption: The formation of modern Győr-Sopron County. (1) territory assigned from Vas County to Győr-Sopron County in 1950. (2) territory assigned from Sopron County to Vas County in 1950.
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