Pekalongan City located in the coastal area which vulnerable to the tidal flood. The tidal flood in Pekalongan City always increases. The tidal flood inundating the North Pekalongan Sub-district to the radius of three kilometers from the beach. There were eight villages which stagnated by the tidal flood, include the Village Pabean and Village Bandengan. The adaptive capacity of society needs to be improved to deal with the tidal flood. This study aims to assess the adaptive capacity of coastal communities Pekalongan against the tidal flood vulnerability by using the quantitative methods with scoring and descriptive statistical analysis to synthesize the results of the analysis. Adaptive capacity assessed at the level of individuals, communities and cities. This analysis also based on the physical, social and economic aspects. The result of the analysis showed that at the individual level, both of these villages, the level of the adaptive community was low. It was caused by the low ability of communities to repair houses. This level of adaptive capacity was also influenced by the level of education and income levels. At the community level, the level of adaptive capacity was determined by the ability of communities to improve infrastructure. This level of adaptive capacity was also determined by the existence of the organization and the ability to raise funds. It could be known that the level of adaptive capacity at the community level was moderate. At the city level, the government was able to adapt by providing technological and institutional. Society needs to increase the adaptive capacity by improving the ability of the economy, in addition, to optimizing the performance of government and non-government organizations.