what polish city was called danzig until 1945, The Polish city known as Danzig until 1945 was Gdańsk. Gdańsk is located on the Baltic Sea and has a rich history as an important port city. After the end of World War II, the city became part of Poland, where it remains an important cultural and economic center to this day. The name “Danzig” is still sometimes used in German contexts to refer to the city due to its historical German influences and past presence.