The average major salary at Clark County was $120,087 , which is 38 percent higher than the average salary for this job in Ohio, but 13 percent lower than the national average for this job . Major salaries at Clark County typically range from $118,645 to $122,970 (25th to 75th percentile). The highest reported major salary was $122,969. There are 3 employees at Clark County with the job title major.