Bollinger (bo-lin-guhr), county (621 sq mi/1608 sq km; 1990 pop. 10,619), SE Mo.; Marble Hill; 37°19'N 90°01'W. Crossed by Castor and Whitewater rivers; drainage channels in SE. Corn, soybeans, wheat; livestock; timber. Part of Mark Twain Natl. Forest in NW; Duck Creek Conservation Area in SW. Formed 1851.
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