This small farming and ranching mountain community, population 125, high up on the side of the Aquarius Plateau at 6,000 feet elevation, has the distinction of being the last town in the United States to have a road built to it. That was in 1938-39. Until then it was the only town in the continental United States to still receive its mail delivery by pack mule and pack horse.
Ranchers began drifting into the area during the late 1870s. By the mid-1890s Boulder had established itself as a ranching and dairy center.
Anasazi Village State Historical Monument (also known as the Coombs Site) This was a distant Kayenta Anasazi outpost on the northwestern frontier of the prehistoric culture. The monument is located on the site of an ancient village dating back to somewhere between AD 1050 and AD 1200. They grew corn, beans, and squash in fields nearby. Village population peaked at about 200, with an estimated 40-50 dwelling. Outside is six-room life-size replica of an Anasazi dwelling has been constructed on the path that leads to the excavated historic village. 87 rooms have been unearthed by University of Utah archaeologists, who are still intermittently involved with the site for research and training purposes.