Today on Forbes, America's richest families, from Walton's to Rockefellers, these are the 54 richest.

For America's 250th anniversary, Forbes is celebrating our own version of founding fathers and mothers,

the entrepreneurs behind what have become the largest family fortunes in the country.

Most built one or more of the nation's most successful businesses.

Many, though not all, of these companies, are still owned and run by the descendants of their

founders all these years later.

That includes everyone from the Hughes family, with estimated fortune of $14.7 billion,

who are behind public storage, and who are now in their third generation, to the oldest

clan on the list, the DuPonts, with an estimated fortune of $22 billion, who founded what became

the chemical giant bearing their name in 1802 and are now in their

ninth generation. Forbes first began tracking individual billionaire wealth in 1918 when

oil baron and future philanthropist John D. Rockefeller, who died in 1937, was featured

as the world's first and only billionaire in Forbes magazine.

Over the last 13 years, we've also periodically ranked America's richest families,

including the Rockefellers, who are now in their seventh generation and tied for 45th on this

year's list with an estimated $12.5 billion fortune.

The cutoff for our first ever ranking of the country's wealthiest clans in 2014 was just

$1 billion.

But with billionaire wealth skyrocketing to unprecedented heights, as seen when Elon

Musk briefly became the first trillionaire in June, Forbes raised the table stakes for our families list

to $10 billion in 2024. Forbes found a record 54 multigenerational clans on our second ever

ranking of America's Deca billionaire families, up from 45 on that first 2024 list.

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