Coral community is strongly driven by habitat characteristics such as wave exposure, turbidity etc., and may vary at a small spatial scale. However, understanding of spatio-temporal variations of community composition and demographic processes of populations constituting the community in a smaller spatial scale is limited. Therefore, we examine population dynamics of key reef builders, genus Acropora, at five reefs located between and within three habitat types (0-10 km) around Sesoko Island, Okinawa. The habitat types are A) exposed and low turbidity, B) sheltered and high turbidity, and C) intermediate. The reefs have different status of temperature, light, topography and other benthic community. Moderate thermal anomalies were also observed in summer 2016, highest at intermediate habitat type. Four 2 x 2 m permanent quadrats were surveyed every April and October at each reef from October 2015 - 2018. Abundance, size structure and recruitment rates of Acropora corals varied between and within habitats. Growth rates of Acropora corals were higher at sheltered and more turbid sites, and lowest at intermediate habitat after thermal anomaly. We will further identify the abiotic factors and demographic traits (growth, partial mortality, total mortality, post-settlement mortality) driving the Acropora community structure around Sesoko Island.