The average corporal salary at Lancaster County was $49,912 , which is 24 percent lower than the average salary for this job in South Carolina, and 48 percent lower than the national average for this job . Corporal salaries at Lancaster County typically range from $49,179 to $51,146 (25th to 75th percentile). The highest reported corporal salary was $53,300. There are 15 employees at Lancaster County with the job title corporal.