The wife and I are currently residents of Louisiana, and Mississippi. My primary resident is in Kenner La., I vote, have health insurance here and we stay as often as possible. The wife's primary residence is in Mississippi, her business is located here. She votes and pays Ms St taxes here. We are planning on buying a MH around Nov., selling the house in Kenner yet registering it in Louisiana. I need a residence in certain zip code to maintain my health insurance, and the license, taxes, will be much cheaper then the nominal increase in the insurance. We already have a PO box in Kenner can I still use this address for my primary residence. I have a Louisiana id to this street address, should I switch it to my PO box before we sell? Is this how a residency is established?