The Osage Tribe was historically one of the wealthiest groups of people in the world due to their ownership of mineral rights in Osage County, which included oil reserves [1]. However, it is important to note that the tribe's wealth has changed over time. Here is some information about the current financial situation of the Osage Tribe:

1. Historical Wealth: From the early 20th century until the mid-20th century, the Osage Tribe received significant royalties from oil production in Osage County, making them extremely wealthy. Between 1901 and 1950, the tribe received nearly $300 million, which would be worth about $4 billion today [2].

2. Current Financial Situation: While the Osage Tribe is no longer among the richest people, the effects of the oil industry are still felt today. Many Osages continue to receive quarterly royalty payments, known as headrights, from oil production in Osage County [1]. However, the value of these payments has decreased over time.

3. Economic Development: The oil industry in Osage County has provided job opportunities for Osages across Oklahoma and has contributed to the economic development of the entire country [1].

Learn more:

1. Did You Know? | Osage Nation
2. How the Osage Tribe became rich before the Reign of Terror
3. Largely Forgotten Osage Murders Reveal A Conspiracy Against Wealthy Native Americans : NPR