Ohio State law says sexual offenders must register, so their neighbors know where they're living.
When the worst of those offenders, the sexual predators move in the county has to notify neighbors within a thousand feet with these postcards. The postcards give the predator's name and address. FOX19 visited five neighborhoods yesterday and residents say they get the cards, and they're thankful for them.
Hamilton County residents can go the sheriff's department website to see a list of offenders in their neighborhood.