The Sustainable Tourism Attitude Scale (SUS-TAS) has been widely recognized as a promising instrument for evaluating tourism sustainability. Scholars have successfully validated this scale across contexts. This study carries forward the fruitful outcomes of previous SUS-TAS studies by exploring some possible facilitations of the SUS-TAS application efficiency and scope. Using data from 11 Midwestern U.S. counties, this study (1) found a maximally parsimonious 20-item SUS-TAS that facilitates data collection efficiency without compromising the psychometrical properties, (2) verified SUS-TAS’s predictive validity as in predicting residents’ intention to engage in tourism planning at different levels, and (3) suggested that SUS-TAS is best interpreted by seven separate dimensions rather than a global factor. The extended applications and possible further refinements for the scale are also discussed.