Sombor (Serbian: Сомбор, Hungarian: Zombor, Rusyn: Zombor (Зомбор) is a city (47,623 inhabitants in 2011) and the administrative center of the West Bačka District in the autonomous province of Vojvodina, Serbia.
Postmark in Yugoslavia era
Before 1929, Kingdom of Serbs, Croats and Slovenians.
Postmarks in Kingdom of Hungary (1867-1918)
One of the 16 town localities.
Postmark in Austrian Empire Voivodina
The ZOMBOR name was in use when the post-office opened before 1850,