Donald Trump is the oldest president elected in US history

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Donald Trump pulled off a stunning upset early Wednesday morning and secured his spot as the 45th president of the United States. When he's inaugurated this upcoming January, he'll become the oldest elected president in US history.

Previously, the oldest elected president was Ronald Reagan, who took the oath of office at the age of 69 in 1981. Donald Trump is 70 years old. Interestingly, had Hillary Clinton won election, she'd have been our second-oldest president-elect at the age of 69.

Check out where all the US presidents stand in the graphic below:

(Mike Nudelman/Business Insider)

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