Building on existing work evaluating food-attribute labels, we use data collected in 2010 from a national web-based survey of 1,002 households to examine consumer inferences and valuations of food products promoted as “sustainably produced.” A best-worst scale framework was implemented to identify how consumers define “sustainably produced” and their preferences for each of the sustainable farming practices considered. The results suggest that consumers perceive farm size and local production as important elements of sustainable agriculture while economic attributes exhibit a significant amount of heterogeneity, indicating segmentation in the sample and the potential for targeted marketing.