Since it appears to be a state tax question, I recommend indicating the county of residence as of 12/31/19 (at the end of the year).
The menu only allows to enter one property unless a lot. How would I show both properties in different counties?
Select your main residence county and add the 2 properties together to enter as one total.
I’m referring to the state review which request property tax ID numbers for each property.
In Illinois there is a Property Tax Credit based on the property taxes you paid on your personal residence. If that is the area you are questioning about on your taxes, your personal residence is in only one county.
You should be able to deduct all your property taxes you entered on your Federal return. The information is carried over to your Illinois state return.
For half of 2019 my new wife had a home in a separate county and paid property taxes while I had a home in a separate county and paid property taxes. The form doesn’t allow you to enter two counties unless you list the second property as an adjoining lot.
You are correct. The Illinois Publication 108 also does not allow. You can only file for the credit for your principal residence and adjoining property. .
IL Publication 108, page 2: If you and your spouse each have a principal residence, or if you had two principal residences during the tax year due to the sale of your home, you may claim the tax paid on both residences when figuring this credit.
It seems then that the tax law states that you can combine the property tax amounts for two different properties. If so, the location of the properties would be a secondary consideration, so you should be safe combining them into one entry and pick the residence you lived in for most of the year.