Postcode Colloto (Siero) in Spain 33010 Posted on December 28, 2019 by Postmaster Ads. Europe > Spain > Asturias > Asturias > Colloto (Siero) Do you looking for the Zip Code for Colloto (Siero)? Zip Code for Colloto (Siero): 33010 Continue reading “Postcode Colloto (Siero) in Spain 33010”