What to do about this; speaking from the perspective of 20+ years of physical-address anonymity.
Get a private mailbox at a place like Mailboxes Etc.: look in the yellow pages under Mailbox Rentals.
These places also ask for ID, but they aren't the government, and presumably the government needs to come asking before they turn the data over. The mailbox service will need a physical address on record. Fine, ask a friend or family member to use theirs temporarily, ideally someone who is moving within the next year or so, so that address will become obsolete.
Once you have a private mailbox (cost about $15 / month and worth it) you can put that down as your legal address. When some form asks for an address, put it on there, and use the # instead of PMB, i.e. instead of John Doe, 1234 Main St. PBM 987, you'd say John Doe, 1234 Main St. #987. The "#" is the "number sign." If anyone asks, it's your "work address." As in "work from home, need home office mail service to handle packages."
If you're clever you can get that address on your drivers' license by just putting it on the form and not drawing attention to it. Put the mailbox number in the line for Apartment number or some such. Or if they ask, it's your "work address" since you're between houses at the moment.
One thing. NEVER lie to a cop who asks if the PMB address on your drivers' license is where you actually live. Lying to cops is a crime, go to jail, and even if the individual officer doesn't feel like hauling you in, he'll be thinking of you as a liar so whatever else you say won't be worth a damn to him. Just explain it's your permanent address, you're between houses or whatever is the case. In my case the situation is "interesting" i.e. court-ordered confidentiality of address, so I explain the circumstances including having helped send a violent felon to prison (expert witness testimony), and it's always been cool. Local cops are usually friendly enough; what you want to do is keep your physical address confidential as far as state and federal databases are concerned, including consumer databases (corporations can be every bit as much trouble as government when it comes to privacy issues).



