Registered Dietitian Salary. (United States). The median salary for Registered Dietitians in the United States is approximately $50K per year, but employers pay the most in Los Angeles, offering around $69K on average.Each state will have its own requirements related to the license required for a registered dietitian.) Communication and people skills, organization and planning are essential for registered dietitians. Registered dietitians must also have a moderate degree of computer literacy.