Blair Athol was originally a private subdivision of section 357 in the
Hundred of Yatala in the vicinity of today's Lionel Avenue, a studfarm bearing the name Blair Athol. The suburb name was formalised in 1944 at which time the boundaries stretched from Grand Junction Road to Irish Harp Road (now Regency Road). In 2000, the portion south of Angwin Avenue and its easterly projection to Main North Road was annexed by Prospect. The historic area known as Gepp's Cross (named for the busy intersection of Main North Road and Grand Junction Road) overlaps the north east corner of the modern suburb and includes the historic Gepps Cross Hotel (also known as Gepp's Cross Inn). The modern suburb of
Gepps Cross occupies only the land north of the intersection. Blair Athol Post Office opened on 15 June 1955 and was renamed
Blair Athol West in 1966. At that time the existing
Enfield office (open since 1852) was renamed
Blair Athol and it was replaced by the
Enfield Plaza office in 1997. ==Reserves==