There are 58 Probation Departments in California, serving a population of 38,982,847 people in an area of 155,747 square miles. There is 1 Probation Department per 672,118 people, and 1 Probation Department per 2,685 square miles.
The state of California is ranked 48th in Probation Departments per capita, and 36th in Probation Departments per square mile.