It's a crazy area, H&K.
Each state has it's own definition of "residence" and "domicile" which they use on your driver's license. Texas DMV allows you to "change address" on your Texas DL even "on line."
BUT--for each action, there is an equal and opposite re-action; thanx, Sir Issac, patron saint of repeating arms.
Thing you have to watch are the govmint computers taking all this in; you change your TX DL to read residence in Missouri, and you may wind up getting a nastygram from the MO A/G as to why you have not been paying the MO State Income Tax, even while living in TX. OUCH! See MO Dept of Revenue Dept website.
What is happening is a lot of cash-starved states now are trolling for extra-income by some diabolical means--like, cross checking hunting/fishing licenses with state income tax records, even for "out-of-staters." A puter can search this out in milli-seconds. Ever notice why govmint always asks for SSN?
BIG BROTHER AT WORK!
When Howard Hughes died in mid-flight returning back from Mexico where he was getting cancer treatment, he literally died at the "Four Corners" area. For the next TEN YEARS in court New Mexico, Arizona, Utah, and Colorado were battling "He died in my state!" Reason: "residence" equals "domicile" equals DEATH TAXES due the state where you die. P.S. After 10 years, they all agreed to split his death tax 25% each!