If we owned a home in one state for 6 months, sold it, then bought a house in another state), which state counts as the primary residence?

[philanddevon]

This occured in tax year 2015

[californiasteven]

When working on your return with TurboTax you would report the move under Personal Information.  Almost certainly you would end up filing a part year return for each state.  TurboTax walks you through this.  It's fairly easy.  Did I understand correctly that you were living in one state, sold your home, and moved to another?  Not that one or the other home was just an investment?