Peruc is a market town in Louny District in the Ústí nad Labem Region of the Czech Republic. It has about 2,300 inhabitants. The name is deriā¦Peruc is a market town in Louny District in the Ústí nad Labem Region of the Czech Republic. It has about 2,300 inhabitants. The name is derived from the personal name PeruÅ„ or Perut, meaning "PeruÅ„'s/Perut's ".