Those who have been around for five to 10 years don't get much more, though; the median salary in that group is $37K. After working for 10 to 20 years, Juvenile Probation Officers make a median salary of $44K.In the end, more experience does seem to mean larger paychecks; seasoned Juvenile Probation Officers with more than 20 years of experience earn a predictably higher median salary of $51K.United States). Juvenile Probation Officers in the United States can expect only a modest salary, with average pay of just $37K per year. Compensation ranges between $27K and $57K per year. Medical benefits are awarded to almost all, and a fair number earn dental coverage.