There Exploring the levels of knowledge, attitude, and practice (KAP) of the citizen is an initial step towards designing comprehensive and participative solid waste management strategies, programs, and policies. A cross-sectional survey was conducted to capture the knowledge, attitude, and practices (KAP) on solid waste management from a total of 107 respondents in Penampang Proper Village, Penampang, Sabah, Malaysia. The study determined the relationship of the independent variables (year of birth, gender, education, and employment) with the dependent variables (KAP) using the Kruskal Wallis correlation test. Relationships were tested at 0.05 levels of significance and Spearman Rho correlation was used to test the relationship between the KAP variables at 0.01 levels of significance. It was found out that most respondents have excellent levels of KAP but none of the independent variables has a significant relationship to the KAP levels. However, the respondents' year of birth and educational level has a significant relationship to their practice level. Spearman Rho test also reveals that knowledge and attitude have a positive correlation with each other. The findings, therefore, may be useful to assist local campaigners in planning message materials, platforms and input to further increase citizen participation.