Individual ID numbers,,, Command Staff is the upper 500s (500--510), Supervisors in the 520 series, Patrol Deputies in the 530-550s, Courthouse/Jail Deputies 570s. Detectives are somewhere in the mix. This is what I've figured out in the few months I've lived in Durango.
I've not heard anything in the 580 or 590s. Search and Rescue ID#s are Echo # on the OEM/SAR freqs/TGs but also use their last names for a lot of comms.