Kolberg is an unincorporated community in the town of Brussels, in southern Door County, Wisconsin. County Road D connects the community to Forestville and to Brussels. Kolberg came to be in 1893 when Conrad Guth built his store and creamery on the corner where the present creamery now stands. A post office was opened in 1895 by Conrad Guth and closed in 1907, originally in the first store building but moved across the street when the new store was built.