I need help figuring out my residency

[nicobru21]

I have a PA driver's license but have working in Washington doing travel assignments with a PO box staying in Airbnb's. I did receive my local PA taxes and was planning on filing them. Not sure if I add Washington or not?

[JeffreyR77]

Your residency will revert to where you maintain your domicile.  Your domicile is where you intend to return to.  You have your driver's license from PA, if your PO box is in PA,  and if you are still registered to vote in PA, you are exhibiting traits that your domicile is still in Pennsylvania.  You should file as a resident of PA and a non-resident of Washington.