What State do I file Taxes in?

[AlexanderW]

I am a member of the Illinois National Guard on Active Federal Orders (Title X).

My W-2 I received for 2019 says my Claimed State is Illinois but I moved to Missouri to be close to work, so my home address on my W-2 is a Missouri address.

My only source of income for 2019 was from the Army.

Do I file State Taxes in Illinois, Missouri, or both?

Thank you for the help.

[SusanY1]

Unless you have changed your state of legal residence, you will continue to file taxes as an Illinois resident for as long as your only source of income is from the U.S. Army.  

Thank you for your service!

[AlexanderW]

I completed a DD Form 2058 to change my State of Legal Residence to Missouri and registered my vehicle in Missouri.

My understanding is that is enough to change my State of Legal Residence to Missouri but I am unsure about this.

So is my W-2 wrong to still claim Illinois and will I need to request my W-2 to be updated to reflect Missouri as the claimed state before I file?

Or will I still be filing in Illinois because my W-2 has IL as my claimed state?

Thank you so much for the help!