The joint bid received 134 votes to 65 for Morocco.
FIFA's hosting selection process was revamped in the wake of recent scandals enveloping the world governing body of soccer.
President Donald Trump took to Twitter Friday to thank New England Patriots and Revolution owner Robert Kraft for his "excellent advice" regarding the World Cup. "And the boys on the football team made me feel at home".
"Not only our people and our families, not only our businesses, also in football they know that Canada, the United States and Mexico are deeply united", he continued.
"There are so many unpredictable things in the World Cup".
Costa Rica's players take part in a training session at Olimpiyets Stadium in Saint-Petersburg, on June 13, 2018, ahead of the Russian Federation 2018 World Cup football tournament. The United Bid's hosting vision and strategy projects more than 5.8 million tickets will be sold, generating in excess of $2 billion in ticketing revenue.
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According to the joint North American proposal, the US will host 60 games, while Canada and Mexico will each host 10.
It's why Uruguay and Argentina seem to be accepting of Paraguay glomming onto the bid to host the 2030 tournament, which will be the centennial of the first World Cup.
The only real stumbling block on the campaign for the North Americans was concern about the impact of Trump's push for immigration restrictions and a leaked White House outburst about African nations. The president has regularly assailed world leaders, including allies like Germany's Angela Merkel and France's Emmanuel Macron, for "ripping" America off over trade.
That was a case of returning the favour - the three winning countries had given Infantino support in his bid to succeed Blatter.
"The passion you are going to see for that World Cup, you combine it with the passion that historically has existed in Mexico, the way Canada is growing, you are going to see a very different environment, a very different experience for visiting fans", he said.
The World Cup at Brazil saw a lot of larger-than-life carnivals take place in the month-long tournament.
Soccer is Mexico's national sport, but is still considered a niche sport in the United States and Canada.