Illabo is a locality in the South West Slopes part of the Riverina and situated about 13km southwest of Bethungra and 16km northeast of Junee. At the 2006 census, Illabo had a population of 190.Illabo Post Office opened on 1 July 1879. A railway station on the Main South railway served the town between 1878 and the 1970s. A grain silo remains in use. The town name is derived from an Aboriginal word meaning "where".