Some postal codes contain at least 5000 people, but at the same time my apartment building has one of its own. I think it's largely based on how mail is distri

Some postal codes contain at least 5000 people, but at the same time my apartment building has one of its own. I think it's largely based on how mail is distributed, as they are Canada Post identifiers. My 5000 person hometown has no delivery -- everyone goes to the one post office. But my apartment building has its own little postal box thing, which requires a key from the mailman, which is a special case compared to dropping in mailboxes on the rest of the street. I don't suppose there's any postal workers on here to chime in?