Irwin, Ohio

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Irwin is a small town located on both sides of State Route 161, several miles south west of Marysville and Milford Center and north east of Mechanicsburg in Union County. Irwin is the location of a post office which serves the surrounding area including the small town of Rosedale. Irwin's coordinates are Latitude 40.12 & Longitude -83.49 and its elevation is 1,010 feet.