The average historian salary at Fairfax County was $76,581 , which is 24 percent higher than the average salary for this job in Virginia, and 31 percent higher than the national average for this job . Historian salaries at Fairfax County typically range from $70,604 to $78,652 (25th to 75th percentile). The highest reported historian salary was $89,374. There are 5 employees at Fairfax County with the job title historian.