Investigator salary at Grant County

The average investigator salary at Grant County was $95,370 , which is 47 percent higher than the average salary for this job in Washington, and 46 percent higher than the national average for this job . Investigator salaries at Grant County typically range from $92,075 to $98,665 (25th to 75th percentile). The highest reported investigator salary was $99,473. There are 4 employees at Grant County with the job title investigator.