The average teacher salary at Knox County was $22,818 , which is 66 percent lower than the average salary for this job in Ohio, and 65 percent lower than the national average for this job . Teacher salaries at Knox County typically range from $22,164 to $23,471 (25th to 75th percentile). The highest reported teacher salary was $23,471. There are 2 employees at Knox County with the job title teacher.