Frysztat County

Named after its capital in the town of Frysztat (now Fryštát district of the town Karviná, Czech Republic), it was part of Silesian Voivodeship, and existed from October 1938 until German Invasion of Poland in September 1939.

In early October 1938, the government in Warsaw sent an ultimatum to Prague, demanding the return of the region of Trans-Olza, which the Czechs had annexed in 1919-20.

Czechoslovak government agreed, and units of the Polish Army entered the region, annexing an area of 801.5 km2 with a population of 227,399 people.

Polish government divided Trans-Olza into two counties – Frysztat and West Cieszyn.

[1] On 31 January 1939, Frysztat County was expanded by the gminas of Gruszów, Hermanice, Michałkowice, Radwanice and Ostrawa Śląska.