Domicile can be tricky - luckily, we have experienced attorneys! In short, you have one, and only one domicile; however, you may have many residences—in theory you could have a residence on every street, everywhere.You need a street address. Places like the Mail Box store. An Affidavit of Domcile is a sworn statement that you file with your county testifying that you intend to domicile in a new state. When you travel fulltime, your domicile is where you maintain a permanent address while your residency is where you spend most of your time. If you are a full-time traveler, establishing a domicile is essential for protecting yourself from liability. Another option for obtaining an RV address is to register your RV as a domicile. You can use anyone's address in the country. The best states for full-time RVer domiciles generally come down to Texas, Florida or South Dakota.