Arock, Oregon

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Arock, Oregon
Unincorporated community
Arock, Oregon is located in Oregon
Arock, Oregon
Arock, Oregon
Arock, Oregon is located in the US
Arock, Oregon
Arock, Oregon
Location within the state of Oregon
Coordinates: 42°54′51″N 117°31′31″W / 42.91417°N 117.52528°W / 42.91417; -117.52528Coordinates: 42°54′51″N 117°31′31″W / 42.91417°N 117.52528°W / 42.91417; -117.52528
Country United States
State Oregon
County Malheur
Elevation 3,727 ft (1,136 m)
Time zone Pacific (UTC-8)
 • Summer (DST) Pacific (UTC-7)
Area code(s) 541
GNIS feature ID 1117045[1]
Coordinates and elevation from Geographic Names Information System[1]

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 through 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]


  1. ^ a b c "Arock". Geographic Names Information System. United States Geological Survey. November 28, 1980. Retrieved January 31, 2017. 
  2. ^ a b Oregon Atlas & Gazetteer (7th ed.). Yarmouth, Maine: DeLorme. 2008. pp. 83, 87. ISBN 0-89933-347-8. 
  3. ^ a b McArthur, Lewis A.; Lewis L. McArthur (2003) [1928]. Oregon Geographic Names (7th ed.). Portland, Oregon: Oregon Historical Society Press. p. 33. ISBN 0-87595-277-1. 
  4. ^ a b "Malheur County Portraits". Oregon Historical Society. Archived from the original on March 4, 2012. 
  5. ^ "Oregon National Register List" (PDF). Oregon Parks and Recreation Department. June 6, 2011. p. 26. Retrieved September 28, 2013. 
  6. ^ "Arock, Oregon". Weatherbase. CantyMedia. Retrieved January 31, 2017. 

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