It took me a while to figure this out. You need two codes for different questions in TurboTax to figure local taxes:
1. A code for your local ID (city, township, etc.), which you can look up at this URL:
https://www.adp.com/resources/tools/local-tax-code-locator.aspx
2. A code for your taxing school district, which you find through your state income tax authority. In Ohio, that information can be found at the URL below, but I assume other states have something similar:
https://tax.ohio.gov/help-center/the-finder/the-finder