I posted on Twitter about the importance of knowing your local police patrol beats. While this is more of a SHTF kinda thing, it's beneficial to know for general scanner monitoring or having an idea of how many cops are covering your area. It's also an excuse to post about Ventura County Sheriff's Office beats, so why not?
Most of this information in each state is public information. I pulled this PDF off the public website some years ago. I presume it's still there. If not, a public records request or even a polite email to Crime Analysis can probably get one for you. These beat maps don't change much.
Note this applies only to VCSO, but systems are somewhat similar in the local cities.
So the beats correspond to patrol call signs. Number (east/west county patrol), Letter (beat), 1 or 2 (shift, 1 is day/2 dawn), number (beat number). So 9A21 would be TO patrol, Adam beat, dawn shift, car #1.
3 West County
4 East County
5 (call signs only) Special Services/detectives/SA
7 (call signs only) Custody/Special Services
9 Thousand Oaks
10 not used
11 Todd Road transportation
VCSO beat maps PDF
Support my work, buy my books! These books talk about policing Ventura County.
Note: this an adaptation from my non-fiction book Suburban Warfare: A cop's guide to surviving a civil war, SHTF, or modern urban combat, available on Amazon.