The entire Hamilton County Sheriff's Office is now on the 800 MHz p25 Digital system. unless you have a scanner capable of following the digital system (pro-96, pro-2096 and a couple of Unidens that I can't remember the model numbers for), you won't be able to hear them at all. The talkgroup is 00051.
However, just for reference/nostalgia, the old east dispatch frequency was 460.025. I belive the repeaters that were on that frequency were given (last I had heard) to either City of Middletown or city of Hamilton (Not sure of which).
Also I forgot to mention, the individual departments may be useing their old "descrete" frequencies or the twp frequency for car to car. Some also may be useing Nextel. I know (at least up till last year) Colerain was occasionally useing the old Twp Public Services Frequency (155. something)