Retirement tax questions

It should say on the 1099G.  Box 4 is for federal and box 11 is state withholding.   If you don't have the actual 1099G form it should say the box # by the amount.   If you can't figure it out you need to ask the state unemployment office.  

Here is a blank 1099G form

https://www.irs.gov/pub/irs-pdf/f1099g.pdf