Red Oak is an unincorporated community located along Richland Creek in Buckeye Township, Stephenson County, Illinois, United States.Red Oak Topo Map in Stephenson County IL Red Oak is in Orangeville Community School District.

History Stephen A. Rigney (180–1947), Illinois state representative and farmer, was born near Red Oak.'Illinois Blue Book 1909-1910.' Biographical Sketch of Stephen Rigney, pg. 206-297

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