The Columbia is truly an All-American breed, the first to originate in the United States. Columbias were developed in 1912 from Lincoln and Rambouillet crosses. The object of the cross was to create a breed that produced more pounds of wool and lamb and could replace crossbreeding on the range.
Though originally bred for range conditions, the Columbia has found widespread acceptance throughout the United States and is used increasingly to sire crossbred market lambs. Columbias are one of the larger-sized breeds. Rams weigh between 225 and 300 lbs (100-135 kg) and females weigh between 150 and 225 lbs. (68-102 kg).
Columbia sheep produce a heavy, medium-wool fleece with good staple length and hardy, fast-growing lambs.