Arock is a community in Malheur County, Oregon. It is part of the Ontario Metro Area, and is an incorporated area. The local post office was established in 1926.
Sheep Ranch Fort near Arock is the oldest building in the county, and is listed on the National Register of Historic Places.
Professional services, manufacturing of goods, agriculture and related activities are the major contributors to the local economy. The cost of living here 11.70% lower than the country average.
This place gets about 12 inches of rain annually. The number of days with measurable precipitation is 64. Snowfall is about 23 inches annually.