What would I input for my spouse’s residence if we were stationed in Japan for the whole year?

[ortiz-martinez19]

I am filing jointly and she did not have a job during the year

[ToddL]

If you were military stationed in Japan, both you and your spouse are considered to remain residents of (and "live in") your U.S. state (or respective states) of residence ("HOR"). All the personal interview questions should be answered accordingly. 

In the Personal Interview do not select "Lived in another state in 2017". That question only applies if you officially changed your state of residence in 2017.

See TurboTax FAQ - Military Spouses and State Taxes for additional information