Cities can be completely inconsistent on this. At a building in a mid-sized city in California, we had the police department advise us to call their non-emergency number for emergencies and let the dispatcher know that we actually had an emergency, because this would reach the department directly, whereas calling 911 would usually reach the CHP, and there were apparently problems with communication between the CHP and the department. They said that their non-emergency line reached the same dispatchers that 911 calls routed to the department would reach.