It depends. If your residence is in one county but you spend a significant amount of time in another county, then just file a return for the county/state of your residence, unless you also earn incom...
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It depends. If your residence is in one county but you spend a significant amount of time in another county, then just file a return for the county/state of your residence, unless you also earn income in the second location. If that's the case, then you may need to file a nonresident return for the other location.
If, instead, you lived in one location for about half the year and then moved your primary residence to the other location, then file a return for the first location as a part-year resident and then file a return for the second location as a resident.
For more information on this topic, see Multiple States—Figuring What's Owed When You Live and Work in More Than One State.