A list of USA niche web directories. Free and paid local listings of US niche sites and services. Listings include state and city business directories. United States niche directory list. Niche sites can include topics such as employment, blogs, churches, universities, schools, architecture, medical, pets, vets, automobiles, health, government agencies, construction, tourism, shopping, weddings, seniors, restaurants and transportation. Sites with US specific content, that may include states like Colorado, , California, Florida, Georgia, Hawaii, Indiana, Kentucky, Massachusetts, Michigan, Nevada, New York, Ohio, Pennsylvania, Texas, and Virginia. Business listings for free and paid USA website submission.