I am speaking from my experience in Virginia. I live in one county (Albemarle) and lease two seasonal sites in another (Bedford). My boat and boat trailer are registered in Bedford County along with my campers. My Dodge Durango and Toyota Solara are registered in Albemarle. I have a utility trailer that is registered in Albemarle but could be registered in Bedford because in Virginia, you should register your vehicle where it is "PRINCIPALLY GARAGED" or spends the most time. My campers stay in Bedford and my boat and trailer are there for 7 months a year. I did have a clerk in one of the counties tell me I could use where it was on January 1 OR where it spends the most time, but I cannot find that in state code. Beford is far cheaper than Albemarle ($2.35 per $100 value once a year vs $4.28 / $100 of assessed value twice a year), so I am happy I am able to register my expensive stuff there! Neither Bedford nor Albemarle deals with registration stickers any more, but every few years someone from the Bedford office will come through the campground and check registrations. The health inspector comes by at least once a year, too.