Delhi Township is often called "Holt." Holt is one of the oldest unincorporated communities in Michigan and is located in the Charter Township of Delhi. Holt is neither a city nor a village. It is a zip code area. Holt was first named Delhi Center, but this conflicted with Delhi Mills in Washtenaw County. So in 1860 the name was changed to Holt, in honor of Postmaster General James Joseph Holt. Delhi Charter Township is located south of the City of Lansing and is only minutes from Michigan State University, Lansing's Capital City Airport and the center of state government.