Randal has a point...

However, I see a use for a hash in the form of

%hash{$zip$;service}
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foreach $ourzips (@zipcodes) {
     if ($userzip eq $ourzips) {
          $service = %hash{$userzip, service} ;
     } else {
          $service = "No service available. Loooooser!" ;
     }
}
[download]