He posted that this year's personal challenge is to "have visited and met people in every state in the US".
The 32-year-old tech titan added that he needs to travel to about 30 states to fulfil the pledge.
His previous New Year challenges have included running 365 miles, reading 25 books and learning Mandarin.
The US tour comes amid speculation that a future personal challenge by Mr Zuckerberg could include running for president of the United States.
