In-State Residency Tuition Home Zip Code

[dalebrown823]

If I live in Illinois but completed necessary tasks in 2020 to be given In-State Tuition at Missouri University, Columbia where I attend undergraduate college do I use the University's zip code or my Illinois zip code when asked in TurboTax "What's your home zip code?  This is the ZIP code where you lived on 12/31/20."

[dalebrown823]

Adding to my question is the fact that he had to get a Missouri Drivers License as part of establishing residency so it seems his official residency would be Missouri now not Illinois... 

[MaryM428]

When a child is living in the parent's home, but attending college, his residence is the parent's home if a dependent of the parents.  If not a dependent and filing as independent, then it varies by state.

What is my state of residency?