Irma is an unincorporated community in Lincoln County, Wisconsin, United States. Irma is located on U.S. Route 51, north of Merrill, in the town of Birch. Irma has a post office with ZIP code 54442.ZIP Code Lookup
Irma is the location of the Lincoln Hills and Copper Lake Schools, Wisconsin's two juvenile detention facilities.
Notable people Einar H. Ingman, Jr., Medal of Honor recipient, lived in Irma.
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