This would be a massive undertaking and there are a number of organizations that do maintain specific types of data related to sustainability. We do list several starting points for locating data on various topics. Also, the more diverse the people working on your indicator project, the more sources of data the group will know about. While data is essential to measuring sustainability, this site is focussed on explaining the concepts of sustainability and sustainability indicators. Tracking down data takes a bit of detective work sometimes.
Persistence pays off.
In general, the best data sources for local indicator projects are local sources so it is difficult for us to tell you where those are. You are closer. That is also why it is best to include as wide a range of people as possible in your project. This will broaden your knowledge base about the local sources of data. In the meantime, you should check with local planning boards, regional planning commissions, the local and state environmental agencies, and local energy providers.