The Democrat candidate secured the votes he needed to confirm a move to the White House, replacing Donald Trump.
His supporters took to the streets to celebrate – and these images give a flavour of the scenes in Pennyslvania, where victory was confirmed, and across the US.
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9. How Pennsylvania celebrated putting Joe Biden into the White House
Jen Valley, of Hummelstown, Pa., and Carrie Fowler, of Harrisburg, Pa., embrace outside the Pennsylvania State Capitol (AP Photo/Julio Cortez) Photo: Julio Cortez
10. How America celebrated ...
From left, 7-year-old Nina, her father Greg Healey and Julia Healy dance with 5-year-old Liza Healy, and dog is Stella as cars pass by honking horns in celebration after former vice president and Democratic presidential candidate Joe Biden was announced as the winner. (AP Photo/Mark Lennihan) Photo: Mark Lennihan
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