First found in Bavaria, where the family made a considerable contribution to the feudal society which shaped modern Europe.

German settlers were among the most common to come to North America between the mid-17th and mid-20th centuries. Poverty and religious persecution drove many Bavarians to make this long trek. Tenant farmers were also enticed by the prospect of owning land. From east to west, these German immigrants populated the United States, settling in Pennsylvania, Texas, New York, Illinois, and California. Ontario and the prairie provinces of Canada also provided homes to many. Early settlers bearing the Kaack surname or a spelling variation of the name include: Anna Maria Koch, who came to New York City in 1709. Johann Koch arrived in America in 1709; while Georg Ludwig Koch came to New York City in 1710; Caspar Koch settled in Carolina in 1738.

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