Knox County is a county located along the central coast of Maine. Its county seat is Rockland, which also happens to be its most populous city. Knox County covers an area of 1,377 square miles and has a population of 39,858 people as of 2019. It includes picturesque coastal communities such as Camden and Isle au Haut which are popular tourist destinations for their scenic beauty and outdoor activities such as camping and boating. The economy of Knox County is largely based on fishing, farming and tourism.