I didnt receive a sd 100es form and i do not know what the school district code is what is the school district number for zanesville city schools in ohio

School District codes, listed by county,  begin at page 41 at http://www.tax.ohio.gov/portals/0/forms/ohio_individual/individual/2017/PIT_IT1040_Booklet.pdf

Or listed alphabetically starting a page 41 at

http://www.tax.ohio.gov/portals/0/forms/ohio_individual/individual/2018/PIT_IT1040_Booklet.pdf

TurboTax (TT) 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 2018 Ohio Taxes are ready for us to check"
    -Click Other situations
    -Scroll down to School District taxes.