- Tallmadge - Zip Codes in Tallmadge
- Thornville - Zip Codes in Thornville
- Tiffin - Zip Codes in Tiffin
- Tipp City - Zip Codes in Tipp City
- Toledo - Zip Codes in Toledo
- Toronto - Zip Codes in Toronto
- Trenton - Zip Codes in Trenton
- Troy - Zip Codes in Troy
- Twinsburg - Zip Codes in Twinsburg
- Uhrichsville - Zip Codes in Uhrichsville
- Uniontown - Zip Codes in Uniontown
- Upper Sandusky - Zip Codes in Upper Sandusky
- Urbana - Zip Codes in Urbana
- Utica - Zip Codes in Utica