Arock

Arock is an unincorporated community in Malheur County, Oregon, United States.[1] It is part of the Ontario, OR–ID Micropolitan Statistical Area. Arock is along Arock Road, 3 miles (5 km) north of U.S. Route 95 between Jordan Valley and Rome.[2] Jordan Creek flows near Arock and joins the Owyhee River just west of Arock.[2]

Arock was supposedly named in 1922 for a large rock bearing Native American petroglyphs in the vicinity.[3] Arock post office was established in 1926.[3] Its ZIP Code is 97902.

The oldest building in Malheur County, Sheep Ranch Fort, is near Arock.[4] It was added to the National Register of Historic Places in 1974.[5] Arock is one of several places in southeast Oregon that were settled by Basque herders.[4]

According to the Köppen Climate Classification system, Arock has a semi-arid climate, abbreviated "BSk" on climate maps.[6]

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