I would guess its not just in Ohio. Here in northern Illinois I was out for a motorcycle ride on Monday in an area where I have never seen deer. A large doe ran across the road about 20 feet in front of me, while I was traveling about 55 mph. No way I could stopped on time.
While driving down a major suburban road my daughter saw a deer run into the opposite lane and get hit by a car. It then flew into her lane where she luckily had room to swerve and she only ran over and snapped it's legs. She lucked out this time. They're going a bit nuts in Maryland too.
I try to avoid driving at dusk if possible.
I have had the misfortune to have lost TWO cars to deer strikes. Both of them happened around this time of year. Both of the cars were also painted red. I have always wondered if the deer see red in a different way then we humans do? Here is a little article about Maryland, and other States, deer accident problems.
The insurance company calls my wife the deerslayer. She is somewhere near an even dozen now, this while driving. Twice, the deer hit her, she wasn't even rolling. One sailed over a guard rail and landed on her roof. Got its feet under it and walked down to the hood and off. Hoof prints in rood and hood.