The Federal Government has welcomed the High Court ruling, saying the survey would continue as planned and the final result would be declared by the chief statistician at 11.30am on 15 November.
Prime Minister Malcolm Turnbull urged all eligible Australians to vote in the survey.
"This is a great example where every Australian can have a say and we can, as a Commonwealth of Australia, embrace this important social change, consider it and make a decision," Mr Turnbull told Parliament after the decision was handed down.
