The average jailer salary at Knox County was $56,516 , which is 7 percent lower than the average salary for this job in Ohio, but 37 percent higher than the national average for this job . Jailer salaries at Knox County typically range from $52,928 to $63,093 (25th to 75th percentile). The highest reported jailer salary was $66,666. There are 12 employees at Knox County with the job title jailer.