Maybe - but not everywhere. One local twp. has their own MARCS TG, uses the county's VHF for dispatch, but also uses the county's MARCS TG for comms. They seem to mark with the county on either depending on ???
A few of the townships use the county MARCS - but have do not have their own TG.
County has a MARCS and a Fireground MARCS as well.
I do not normally monitor Perry, but when I do I see them using MARCS as well (also see traffic on Unitrunker).
I think the main take away is - it's all changing.
Wayne County FDs are being dispatched over both the conventional frequency and either WAR FD (Wooster, and 918) or County Fire Dispatch on MARCS. All dispatchers and many of the departments can be heard on MARCS County Fire. The number seems to be growing over time.
I'm a little too far to hear a lot of the individual units, so I can't tell if they are also broadcasting over conventional (patch?).