Yes, you can file in an another county in IL, as long as you have resided in the state of IL for at least 90 days. If you are able to speak with your wife, you may want to talk to her about what county would be most convenient for you both and explain that you do not wish her co-workers to know her personal business, so you wish to file in a different county.
Answered on Aug 11th, 2015 at 11:15 AM