Not too sure, people say FL, TX, and SD are the popular ones. FL seems to be by county though, as each county tax office handles this stuff, instead of a statewide DMV. Oregon has a "continuous traveler" status, but apparently, you must already be an Oregon resident.

SD I guess is making millions from people who barely use the roads. Some say it's to inflate population for census numbers, so more seats in congress, electoral college votes and federal funding... But not sure how RVers are counted... Not sure if they send census forms to PMBs.

Also was reading census workers will go to hotels and campgrounds, but that sounded odd to me since aren't a lot of those people are on vacation? Some say it's supposed to be a snapshot of April first. So I guess if a New York resident is spending the winter in FL, then FL would get credit for them? It seems like some different interpretations.

Then your former state might be strict about addresses, unless you use a relative or homeless shelter address... but if you are RVing by choice, don't really think a homeless shelter would be appropriate and if you are across the country I feel like they'd expect you to come to pick up your mail instead of forwarding it or scanning it. I know I heard a story someone in Michigan rented a mailbox because they didn't want to go worried about another domicile yet, changed it online and they accepted it. Then later got a letter with a short amount of time to get a residential address or be suspended. So they had to either use a family or friend's address or rush to another state. So a lifelong resident was kicked out of their home state because they wanted to live an alternative lifestyle.

So if your state doesn't recognize full time RVing, you are stuck getting established in a new state. Full time RVers with money sometimes struggle with this, getting all the documents together. One couple went to SD but his wife had to get a new copy of her marriage license. Also, some states won't accept some birth certificates anymore due to Real ID, meaning you need to get a new one. I guess the rules changed about 20 years ago. I feel sorry for people who are truly homeless, and then you need one document to get another document, proofs of address, affidavits, and everything. It feels like a real way to suppress people sadly.

At least with SD and FL, you don't have to physically bring your car though... So you could fly if forced to change on short notice, get a new license and register your cars. FL will let you register without bringing it too, however, you need a VIN inspection affidavit but even out of state police officers are allowed to sign it. Some RV blogs talk about that. SD has no vin inspections, and there was a group of fraudsters changing vin numbers slightly to register stolen cars in SD because of how lax they are. November 2018 it looks is when the theft ring got caught.

Also, SD doesn't require an in state address for registrations, only licenses. There was a report that Nebraska residents registered in South Dakota because it's cheaper, however, if you live in Nebraska with a Nebraska driver license, you are breaking the law in Nebraska. Maine is supposed to be lax too with trailers and motorcycles if I recall. Some trucking companies also pick lax states.

Some estimate there are a million RVers, I kinda wish the feds would step in and offer a program maybe. If you worked remotely traveling full time or retired in an RV, I think it's stupid you have to still be tied to a state somehow. Right now only US government owned vehicles have federal license plates. But I guess no one really considered this was a possibility maybe? One county in SD has more RVers than people with actual houses and apartments. Apparently, you can vote for state and fed elections with your PMB, but local issues they won't let you anymore I've heard from someone in a FB group... Not sure how true that is or even if that's legal since that's the address on your license and even a homeless person using a park bench could vote. Clay County in FL has also been challenging voting rights for RVers. There was a lawsuit in Texas over RVers using an address in Livingston, TX but Texas recognized their voting rights in the end.

Some people RV by choice traveling the country, while out in cities where housing is so high people buy a RV that barely runs to live in them on the side of the street, some even dumping sewage since can't afford a dump station. So I think some RV people are homeless, but the ones doing it by choice I wouldn't consider them homeless even though some might view them as homeless. Some RVs can get expensive, there are million dollar ones with granite countertops, but then they probably weight more so more fuel. I think personally I'd aim around 35 feet, as probably could fit more places compared to a 40 footer.

I follow some vloggers, but I think it's a neat lifestyle to dream of, plus tech keeps getting better and better. Some day might even have decent satellite internet. Some people even have full time RV families too, doing homeschooling aka roadschooling. One guy owns a marketing company, so he can pretty much manage things from an RV or on a cruise ship. So be nice to follow the weather, sightsee and explore. But it's not an all vacation, got to balance work and play, still got to clean, go grocery shopping, etc. Similar to living in a house but it has wheels. But the whole country can be your backyard.