The Form 1099-G that you received from the state will have the payer ID on the form. On an IRS Form 1099-G it will be in the box labeled Payer's TIN.
will they mail it out to us? because I have not receive mine yet
@fook4182 wrote: will they mail it out to us? because I have not receive mine yet
It depends on your state. Some states only provide the Form 1099-G on a website. Check with your state department of labor or department of unemployment.