Biamble is a civil parish of Napier County, New South Wales,Robert McLean, The New atlas of Australia : the complete work containing over one hundred maps and full descriptive geography of New South Wales, Victoria, Queensland, South Australia and Western Australia, together with numerous illustrations and copious indices (Sydney :J. Sands, [1886) Map 14. that is located at 31°43′54″S 149°19′04″E. The civil parish is roughly equivalent to the rural locality of Neilrex in Warrumbungle Shire Council.

Biamble is on the Castlereagh River between Binnaway, New South Wales and Mendooran, New South Wales.

The Dubbo to Werris Creek railway line runs through the parish of Biamble and the former Neilrex station has now been removed, meaning the nearest freight station is now nearby Merrygoen and the nearest passenger service is Dubbo. Although the station has closed, the railway line remains part of the Intrastate Network managed by the Australian Rail Track Corporation.

Notable people Gregory Macalister Mathews CBE FRSE FZS FLS (1876–1949), amateur ornithologist born in Biamble

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