Mons
Administration communale de Mons – Population, État civil et Étrangers
Rue Buisseret 2, 7000 Mons
Walk in on a weekday and ask whether your card can be reset on the spot or needs replacement codes.
Bring the electronic identity/residence card and your PUK (PIN unlock code) if available. The fee is €5; Bancontact is preferred. For older cards without codes, delivery to Population takes three working days; confirm availability before travelling. New-model counter reset and known-PUK recovery can be done immediately, subject to the applicable card procedure.