Ohio has both city income tax and School district (SD) Income tax. Boxes 18-20 can be used for either. Don't mix them up.
"HUBER HEIGHTS CI" is city tax, not SD. Both Huber Hts and Fairborn have city tax. 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. You may end up owing your resident city nothing, but you are still required to file a return.
"A few things before we wrap up your state taxes"
scroll down to Ohio City
taxes.
Or, later
"Your 2016 Ohio Taxes are ready for us to check"
-Click Other situations
-Scroll down to Ohio City
taxes.
TT cannot e-file an Ohio City or RITA return. It must be printed and mailed.
I actually find it easier to fill out a city return by hand or at the city, CCA or RITA web site, than to use TT. Things don't happen automatically and you need to know what you’re doing. The actual RITA/city forms are easier to follow than the TT interview. There were major changes to the RITA form, this year. At last check, TT was still working on it.
SD 2903 Fairborn CSD (Clark, Greene, and Montgomery counties) also has a SD income tax, which you are probably subject to.
TurboTax (TT) also does not automatically prepare a School District return, you must initiate it.
At the screen, in the Ohio program, titled "A few things before we wrap up your state taxes"
scroll down to School District taxes.
Or later at the screen "Your 2016 Ohio Taxes are ready for us to check"
-Click Other situations
-Scroll down to School District taxes.
You should file a report for the city where you live, your employer is required to withhold and pay to the city or locality where the employer is situated. Fairborn, where you live, is the school district number you should use. They will recognize the tax you paid to the other district when completing your form.
TurboTax has the capability to do the local returns as well. Click the images to enlarge and view for your assistance.
[Edited: 02.01.2018 | 5:40 AM]
@TurboTaxDianeW - could you please find out the status of the RITA forms in TT
@Hal_Al They are available now and I've added images to my answer. Thank you for your additional answer.