Postcode Calabaza (Siero) in Spain 33189 Posted on December 3, 2019 by Postmaster Ads. Europe > Spain > Asturias > Asturias > Calabaza (Siero) Do you looking for the Zip Code for Calabaza (Siero)? Zip Code for Calabaza (Siero): 33189 Continue reading “Postcode Calabaza (Siero) in Spain 33189”