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According to the Bureau of Labor Statistics, salaries of detectives and investigators ranged between $20,040 and $38,240. Median annual earnings of salaried private detectives and investigators were $29,300 in 2002. The middle 50 percent earned between $21,980 and $41,710. The lowest 10 percent earned less than $17,290, and the highest 10 percent earned more than $57,370. In 2002, median annual earnings were $29,030 in investigation and security services, and $22,250 in department stores.