Monitoring coastal environments has traditionally focussed on ecological aspects, with human dimensions a secondary consideration. It is increasingly apparent that decision-makers need to have a greater understanding of the relationship between humans and the coastal environment. We developed a methodology to collect long-term data from the community that allows for robust analysis of spatial and temporal trends in how the NSW marine estate contributes to community wellbeing. An online data collection method was adopted with a response rate of 2,180 coastal residents, 854 youth (aged 14-17 years) and 1,146 coastal visitors. The surveys showed the substantial contribution of the marine estate to quality of life, emotional and mental health, physical health, and social connectedness. Results indicate that threats to the marine estate also impact community wellbeing and personal use. The threats identified as having the greatest impact on community experience include litter, overcrowding, illegal behaviours or activities and climate change. This study provides new evidence on links between the environment and wellbeing. Data collected under this monitoring program fill key knowledge gaps and will strengthen decision-making by improving our understanding of values, threats to values and how this influences community wellbeing associated with the NSW marine estate.