There is no actual way to tell, but if you want to look at revenues form sold Sports Memorabilia Ohio State would have more fans if you wanted to go that way.
Michigan fans could make an argument that their stadium averages 112,000+ people in it's stadium every Saturday while Ohio State averages 105,500+ in it's stadium, but this is just due to Michigan having a larger stadium.
If you want to get technical, counting video views on youtube for Ohio State, Sold memorabilia, tickets sold, average attendance to football games, number of people viewing their games on TV, etc.
Ohio State would have the #1 fan base of any other athletic team in the united states, of any sport, of any league whether high school, college, semi-pro or pro.
This is not set in stone, if you just put it into a points system, Ohio State would be #1.
This is not fact though, it is an opinion based off of facts.
Michigan "Wolverines" V. Ohio State "Buckeyes"
Ohio state Buckeyes and Michigan Wolverines
The Ohio State Buckeyes and Michigan Wolverines do not play for a trophy in their rivalry game.
Ohio State Buckeyes are the biggest rivals to the Michigan Wolverines by far. Michigan State is also a big rival
Ohio State 25 Michigan State 20
Michigan don't forget Ohio st won in 1960. that would be a tie with Michigan
How many days since Michigan wolverines beat Michigan state Spartans
John Cooper had a record of 2-10-1 against Michigan in his 13 seasons as head football coach at Ohio State: 1988: Michigan 34, Ohio State 31 1989: Michigan 28, Ohio State 18 1990: Michigan 16, Ohio State 13 1991: Michigan 31, Ohio State 3 1992: Michigan 13, Ohio State 13 1993: Michigan 28, Ohio State 0 1994: Ohio State 22, Michigan 6 1995: Michigan 23, Ohio State 21 1996: Michigan 13, Ohio State 9 1997: Michigan 20, Ohio State 14 1998: Ohio State 31, Michigan 16 1999: Michigan 24, Ohio State 17 2000: Michigan 38, Ohio State 26
Michigan got its nickname, "The Wolverine State" in 1835. There was a dispute with Ohio over the Toledo strip and the people of Michigan were said to have been as "bloodthirsty and vicious as wolverines."
Nobody was ever good at Ohio state, Michigan is WAY better
As of the end of the 2008 season Michigan leads 57 to 42 not counting tie games.
Yes, his name was J.T. White. First he played at Ohio State but it was the time of World War II so he left Ohio State to serve his country. After the Army, he enrolled at Michigan at played football there.