The average clerk salary at Midland County was $33,170 , which is 5 percent lower than the average salary for this job in Texas, and 14 percent lower than the national average for this job . Clerk salaries at Midland County typically range from $20,722 to $39,791 (25th to 75th percentile). The highest reported clerk salary was $56,467. There are 74 employees at Midland County with the job title clerk.