You should know what locality your are paying tax to. Type in that name or an abbreviation. Or type in anything. Unless you need to file a local tax return, the only thing TurboTax does with that is put it on schedule A, if you itemize.
It depends on what state are you in. For example, in Ohio, you only file a city tax return for the city you live in. But, you employer will withhold tax for the city you work in.
