Sometimes it is the sheriff's office in smaller areas, but I think in metropolitan type areas, you might have to go to the county courthouse. Wherever you plan to go, I would call ahead and make sure that service is offered at the time you plan on being there. And most places have the digital fingerprint scanners, but some might still require print cards, so know what you need to bring. The best thing to do is just make a few phone calls and figure out when and where. I would suggest starting with the local sheriff's office though.