For the Russian feminine name derived from the name of this locality, see Avlida (given name) . Avlida (Greek: αυλίδα) or Aulis is a former municipality in Euboea regional unit, Greece. Since the 2011 local government reform it is part of the municipality Chalcis, of which it is a municipal unit.The population was 9,300 inhabitants at the 2011 census, and the land area is 122.235 km².or the Russian feminine name derived from the name of this locality, see Avlida (given name) . Avlida (Greek: αυλίδα) or Aulis is a former municipality in Euboea regional unit, Greece. Since the 2011 local government reform it is part of the municipality Chalcis, of which it is a municipal unit.