Celebrities aren't the only ones pouring into Las Vegas ahead of Super Bowl LVIII Sunday to watch the San Francisco 49ers take on the Kansas City Chiefs.

The big picture: The game — and perhaps Grammy Award-winning artist Usher, who's slated to perform at halftime — is expected to lure 330,000 people to Sin City and infuse up to an estimated $700 million into an economy bolstered by gambling and tourism, per Rolling Stone.

By the numbers: Exact figures won't be available until after the game, but analysts' estimates range from 330,000 to 450,000 people flocking to Las Vegas and spending between $500 million and $1.1 billion, per the Las Vegas Review-Journal.

• Those attendees won't all be watching the game from Allegiant Stadium, which is hosting the Super Bowl and holds 65,000 people.
• Fans across the country prepping for Super Bowl parties locally will spend $17.3 billion on food, drinks, clothes, decorations and more, according to a National Retail Federation survey.
• The southern Nevada metro area is estimated to benefit $138.6 million from the Super Bowl, per the U.S. Chamber of Commerce.

What they're saying: Curtis Dubay, the U.S. Chamber of Commerce's chief economist, wrote in his synopsis on Tuesday that the game brings "big support to small local businesses and their customers."

• That happens whether consumers are "tuning in to root for one of the competing teams, to watch the halftime show, or be a part of the excitement," Dubay wrote.

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