Lamb, IndianaLamb is an unincorporated community in Craig Township, Switzerland County, in the U.S. state of Indiana.HistoryAn early variant name of the community was called Erin. Erin had its start in 1815. A post office called Lamb was established in 1882, and remained in operation until it was discontinued in 1907.DemographicsThe United States Census Bureau delineated Lamb as a census designated place in the 2022 American Community Survey.