The Jacob Sheep Breeders Association (JSBA) took over the work began by the American Minor Breeds Conservancy , now known as the The Livestock Conservancy. The AMBC began identifying Jacob Sheep in North America in 1985. By 1988, the AMBC assisted the JSBA in forming a breed association and registry from a core group of breeders interested in the continuance and conservation of the breed. The first JSBA flock book was published the following year with over 400 animals inspected and registered. By 2006, more than 10,000 Jacob Sheep had been registered by JSBA. By the end of 2018, the number of JSBA-registered Jacob Sheep exceeded 18,000. Despite a steady increase in numbers, the American Jacob is still listed as a rare breed by the The Livestock Conservancy.