Job Title and Geography. The ASCP survey reports an average hourly wage of $20.08 or $41,766 per year for phlebotomy supervisors. Experience is important, with most supervisors averaging 10.48 years of experience as opposed to an average of 8.69 years for staff phlebotomists.or phlebotomists specifically, the industry-supported Explore Health Careers website cites a salary range of $25,177 to $30,470 per year, or $12.10 to $14.65 hourly. The best indicator of phlebotomists' incomes is probably the salary survey performed annually by the American Society for Clinical Pathology.