Use the county that you live in.  TurboTax will handle your situation.  You normally only have to file a return in the city you live in. It is not necessary to file one in the city you work in, if different. Your employer will remit withholding to the city you work in, but you do not file a return unless you're claiming a refund or your employer didn't withhold enough (both highly unusual). The city you live in will allow a credit or partial credit for the withheld tax you paid to the work location city.