About This Community The suburb of Gnangara has an approximate area of 15 km².It is surrounded by the suburbs of Cullacabardee, Jandabup, Landsdale, Lexia, Melaleuca, Wangara and Wanneroo.It is within the council of Wanneroo.It is within the state electorate of Wanneroo.It is within the federal electorate of Cowan.