Door County Economic Development Corporation: where business starts in Door County. While many relish the Door County Peninsula as a vacation destination, it's also known for its thriving business climate energized with companies whose products are marketed locally and globally. If you are interested in starting or relocating a company on the peninsula, we can assist you with locations, financing, incentives and other information to help your Door County business grow. The Door County Economic Development Corporation partners with entrepreneurs to help build successful businesses in the Door County Peninsula. It's a rewarding relationship that allows businesses to tap into the expertise of area leaders, and provides them with access to a variety of local, state and federal resources.