Osage most commonly refers to the Osage Nation, a Native American people originally from the Ohio and Mississippi river valleys who became one of the most powerful groups on the Great Plains. The name also applies to places, a language, and even a well-known tree species, all connected back to this people. Today the Osage Nation is a federally recognized sovereign tribe headquartered in Pawhuska, Oklahoma, with more than 20,000 enrolled members.
The Osage People and Their Origins
The Osage, who call themselves Ni-U-Ko’n-Ska (meaning “Children of the Middle Waters”), are a Siouan-speaking people who lived for centuries in the Ohio River valley before migrating westward. By the 1600s and 1700s, they had established control over a vast territory spanning present-day Missouri, Arkansas, Kansas, and Oklahoma. They were among the tallest people in North America at the time of European contact, with early French explorers frequently noting the physical stature of Osage men.
Their society was organized into two main divisions: the Sky People (Tzi-Sho) and the Earth People (Hunkah). This dual structure governed everything from clan membership to ceremony and governance. The Osage were skilled hunters and traders who controlled access to bison hunting grounds and acted as intermediaries in the fur trade with French colonists. At the height of their influence in the 1700s, they dominated a territory larger than many European nations.
Forced Removal and the Move to Oklahoma
Beginning in the early 1800s, the U.S. government pressured the Osage into a series of treaties that steadily shrank their homeland. They ceded millions of acres in Missouri and Arkansas, eventually relocating to a reservation in southeastern Kansas in the 1830s. Even there, settlers and squatters encroached on their land.
In 1870, the Osage made a decision that would shape their future in dramatic ways. They sold their Kansas reservation and used the proceeds to purchase roughly 1.5 million acres in Indian Territory, what is now Osage County, Oklahoma. Crucially, they negotiated to retain the mineral rights beneath their land. This purchase, rather than a government-assigned reservation, gave the Osage a unique legal standing over their territory’s underground resources.
Oil Wealth and the Reign of Terror
In the early 1900s, massive oil deposits were discovered beneath Osage land. Because the tribe had retained mineral rights, every enrolled member received a “headright,” a share of the royalties from oil and gas production. By the 1920s, the Osage were per capita the wealthiest people in the world. Individual headright payments could reach tens of thousands of dollars per year, equivalent to hundreds of thousands in today’s money.
This wealth attracted exploitation and violence. During the early 1920s, dozens of Osage were murdered in what became known as the Reign of Terror. White settlers, some of whom had married into Osage families, conspired to kill headright holders and inherit their oil wealth. The crimes were so widespread that the newly formed FBI, then called the Bureau of Investigation, took on the case as one of its first major investigations. William Hale, a powerful local rancher, was eventually convicted of orchestrating multiple murders.
David Grann’s 2017 book “Killers of the Flower Moon” brought this history to wide public attention, and Martin Scorsese’s 2023 film adaptation further increased awareness. The full death toll remains unknown, as many suspicious deaths during this period were never properly investigated.
The Osage Nation Today
The Osage Nation operates as a sovereign government with its own constitution, ratified in 2006, replacing an older system imposed by the U.S. government. The tribe has three branches of government: an elected Principal Chief, a Congress, and a judicial branch. Their capital, Pawhuska, sits in Osage County, the largest county by area in Oklahoma.
Headrights still exist and still generate income from oil and gas production, though at far lower levels than during the 1920s boom. Headrights can be inherited but not bought or sold, and only original allottees’ descendants hold them. The Osage Nation also runs casinos, cultural programs, a language revitalization effort, and various economic enterprises. The tribe operates the Osage Nation Museum in Pawhuska, one of the oldest tribally owned museums in the country.
The Osage Language
The Osage language belongs to the Dhegiha branch of the Siouan language family, related to the languages of the Kansa, Quapaw, Ponca, and Omaha peoples. By the early 2000s, only a handful of elderly fluent speakers remained. The tribe has since invested heavily in language preservation, developing immersion programs, a comprehensive dictionary, and educational materials. A language department within the tribal government works to train new speakers, though the language remains critically endangered.
Osage County and Osage Orange
Osage County, Oklahoma, is named for the tribe and covers about 2,304 square miles. It is the only county in Oklahoma whose boundaries are identical to those of the original Osage reservation. The county gained additional cultural recognition through Tracy Letts’ Pulitzer Prize-winning play “August: Osage County” and its 2013 film adaptation.
The Osage orange tree (Maclura pomifera) is a different but related use of the name. This thorny tree, native to a small region of Texas, Oklahoma, and Arkansas, gets its common name because the Osage people prized its dense, flexible wood for making bows. French traders called it “bois d’arc” (bow wood), a name that survives in several place names across the region. The tree produces large, bumpy green fruits roughly the size of a softball that are inedible to humans. Settlers across the Midwest widely planted Osage orange as natural fencing before the invention of barbed wire, because its thorny branches created an effective barrier for livestock.