The average jailer salary at Knox County was $38,850 , which is 3 percent higher than the average salary for this job in Indiana, but 6 percent lower than the national average for this job . Jailer salaries at Knox County typically range from $24,476 to $47,338 (25th to 75th percentile). The highest reported jailer salary was $68,327. There are 48 employees at Knox County with the job title jailer.