Source?
Hamilton County Ohio, 2019 official Census estimate 817,473.
Registered voters can be downloaded here https://votehamiltoncountyohio.gov/campaign-media/voter-lists/
Sorry you got snowed.
You're not going to believe this, but I swear it's true. States like Ohio actually have web sites and publish their population statistics and election results on them. It's not nearly as exciting as watching two guys on video jerk each other off to far out conspiracy theories.