Round Mountain is a town located in north-eastern New South Wales, Australia, in the Tweed Shire.

In the 2016 census, Round Mountain recorded a population of 143 (51.4% male).

81.8% of people living in Round Mountain were born in Australia.

The other top responses for country of birth were England 7.0%, New Zealand 2.1% and Scotland 2.1%.

This Northern Rivers geography article is a stub.