Yannathan is a bounded rural locality in Victoria,
Australia. the local government area for
Yannathan is the Shire of Cardinia.
Yannathan is a suburb of Melbourne, Victoria and
is about 75 kms southeast of VIC's capital city of
Melbourne. In the 2011 Australian census the
population of Yannathan was 213 when there were
99 Females and 114 Males living there.
Yannathan is on the edge of the former Koo Wee
Rup Swamp and is 9 km north-east of Lang Lang.
The topography is undulating to flat, and before
drainage works were carried out farmlands could
be waterlogged when the Lang Lang River flooded.