Strain is an unincorporated community in Richland Township, Washington County, Arkansas, United States."Feature Detail Report for: Black Oak, Arkansas." USGS. Retrieved May 3, 2011. It is located between Fayetteville and Elkins. The community consists of a small number of homes located around a road junction near the Middle Fork White River.
A post office called Strain was established in 1884, and remained in operation until 1888.
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