The average voter in Ohio has probably never heard of Prsident McKinley much less that he was from Ohio. The average Alaska voter has called the mountain Denali all their lives.
I don't know how you came to the conclusion that the "average voter in Ohio has probably never heard of President McKinley much less that he was from Ohio." I bet that Ohio, like every state I know of, provides students with a history of their state, especially Ohio the "Mother of Presidents."
Oh yes we have. Every 7th grader is required to take Ohio History - so, yeah we know which presidents were from Ohio.