This study assessed the impact of demographics and acculturation on stages of change in smoking behavior among Asian current smokers (Koreans, Chinese, Vietnamese, and Cambodians) who live in the Delaware Valley region. Three stages (precontemplation, contemplation, and preparation) that applied to current smokers in Prochaska's Transtheoretical Model were measured, with a small modification. A cross-sectional self-report survey was conducted by utilizing a stratified cluster proportional sampling technique. Recruited were 1374 Asian Americans from 26 randomly selected community organization clusters and 1174 completed the survey (83%). Data were analyzed using the Pearson chi(2) test of significance. Education was negatively associated with stages of smoking behavior change. Time living in the United States showed a statistically significant positive correlation. Individuals older than 21 years appeared more seriously inclined to quit (be in the preparation stage) than those below age 21. Among the four subgroups, Cambodians (91%) were more likely to fall in either contemplation or preparation, while Chinese had the highest rate in precontemplation stage. Men were more likely than women to be in the preparation stage. Immigration status was not a significant predictor of stages.