Irwin, Missouri
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Irwin is an unincorporated community in northern Barton County, Missouri. It is located halfway between Lamar and Sheldon on U.S. Route 71. Mail is from Lamar.
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Irwin is an unincorporated community in northern Barton County, Missouri. It is located halfway between Lamar and Sheldon on U.S. Route 71. Mail is from Lamar.