5 Biggest NonProfit Companies in the US

2. Salvation Army

Total private donations (in billions): $2.3

Total revenue (in billions): $5.8

While the organization was founded and is currently headquartered in London, its U.S. branch alone helps more than 25 million people every single year. In 2022, its U.S. branch saw private donations of $2.3 billion and has over 1.8 million members. The nonprofit provides several programs including social service programs, youth services, senior centers, veteran services and prison services.