According to a report from the Department of Labor to the US Congress:

Employee ownership is present in every state in the country, with ESOPs being the most widespread form. Worker cooperatives and employee-owned trusts, while few in number, are forming at a faster rate. Over the past half-century, the number of ESOPs has increased from a few hundred in 1975 to 6,525 plans in 2023. (3) Based on Form 5500 data filed for plan years ending in 2023 (the latest available), these plans cover more than 15 million participants and hold an estimated $2 trillion in assets (including company securities and other retirement plan assets). Large ESOPs (those with 100 or more participants) generated $160.6 billion in direct benefit payments in 2023.