Malaysia is approaching the aging society status, raising concern about whether population aging is a challenge or an opportunity for Malaysia to attain higher economic growth. Using state-level data from 2011 to 2021, the results show that population aging is negatively associated with economic growth. The economic impact of population aging is substantial and larger than the conventional determinant of economic growth. Further analysis reveals that the growth-deteriorating effect of population aging is transmitted through the labor force and productivity growth channels. The findings urge policymakers to recognize the scope of the new demographic reality and adjust policies to address the economic implications of population aging.