This Gallup poll on consumption habits showed that 5% of US adults consider themselves to be vegetarian, and 2% identify as vegan. A comparison with the results from previous polls indicates that these numbers have remained fairly stable over the past 13 years.

In this survey, participants were asked if they consider themselves to be vegetarian, with no definition of the label provided. Five percent identified as vegetarian, which was a highly similar result to the 6% who identified as vegetarian in 1999. Numbers of vegetarians did not differ within most demographic groups. However, more females tended to be vegetarian than men, and vegetarianism was higher among older adults than younger adults. Over twice as many unmarried adults were vegetarian in comparison to married adults.

The survey also indicated that 2% of adults consider themselves to be vegan. However, the number of people who did not have an opinion on this question (7%) implies that this term may be less familiar than the term vegetarian. Most of the participants who identified as vegan did not identify as vegetarian.