This study investigated the effectiveness of community-based literacy (CBL) programs in enhancing English language proficiency among adult learners in Pankshin LGA, Plateau State, Nigeria. Using a mixed-methods approach, this research examined program characteristics, demographic factors, and language acquisition outcomes. The theoretical framework integrated language acquisition theory, adult learning theory, and communitybased education theory. The study was conducted to address the scarcity of empirical research on community-based literacy programs in Nigeria, informing policy and practice in adult education. A standardized questionnaire as well as a self-designed language proficiency test were adopted. The findings showed that the CBL program adopted was quite effective in improving the English language acquisition skills of adult learners. It was therefore recommended that instructors in adult-learning facilities adopt the CBL approach in enhancing the language skills of adult learners thereby promoting English language proficiency and empowering adult learners.