There are 39 Probation Departments in Missouri, serving a population of 6,075,300 people in an area of 68,729 square miles. There is 1 Probation Department per 155,776 people, and 1 Probation Department per 1,762 square miles.
The state of Missouri is ranked 24th in Probation Departments per capita, and 31st in Probation Departments per square mile.