Bly is a community in Klamath County, Oregon. It is an unincorporated, and falls within the Klamath Falls Metro Area. The local post office, initially named Sprague River, was established in the area in 1873. The name was changed in 1883. The word Bly comes from the Klamath word p'lai, meaning "up" or "high".
Agriculture, tourism, manufacture and transport of goods are the main commercial activities here. The cost of living here 0.90% higher than the country average.
This place gets about 14 inches of rain annually. The number of days with measurable precipitation is 78. Snowfall is about 14 inches annually.