This paper aims to explore the socio-economic profiles of the nutrition label users and focuses on seven key nutrients: calories, calories from fat, total fat, trans fat, saturated fat, cholesterol, and sodium. The data are from National Health and Nutrition Examination Survey (NHANES) 2005-2006 and Continuing Survey of Food Intakes by Individuals (CSFII) 1994-96. Similar conclusions are drawn from both data sets: those consumers who are older, better educated, higher income, female, and have higher nutrition knowledge will have higher probability to use nutrition labels; those consumers who are in larger size families and being either Hispanic or black have lower probability of using nutrition labels.