Houston, TX, often leads the way for Process Improvement Engineers seeking high earnings. With an average salary of $120,073, the energy sector plays a major role in driving these numbers. Atlanta, GA, and Pittsburgh, PA, follow closely, offering average salaries of $107,245 and $106,931, respectively. Indianapolis, IN, and Denver, CO, also provide attractive salaries for those in this field. Indianapolis averages $104,454, while Denver averages $96,014. These cities present good opportunities for those looking to maximize their earnings as Process Improvement Engineers.