Los Angeles: US Secretary of State Rex Tillerson, on behalf of President Donald Trump, has offered an Australia Day congratulatory message.

Mr Tillerson talked up the "unbreakable alliance" and "powerful bonds of friendship" the US and Australia share.

US President Donald Trump Credit:AP

"On behalf of President Trump and the people of the United States, I am thrilled to congratulate the people of Australia as you celebrate Australia Day on January 26, 2018," Mr Tillerson wrote in his Australia Day message released by the State Department.

"The United States and Australia share deep bonds of friendship that are truly unique.