Oklahoma City, the capital of Oklahoma, was founded on April 22, 1889, during the Land Run of 1889, when approximately 10,000 homesteaders claimed land in the area known as the "Unassigned Lands" in Indian Territory[1][2][3]. It was initially governed by a provisional government until official incorporation on July 15, 1890, and became the county seat of Oklahoma County[1][3][8]. The city's early leadership included provisional mayors William L. Couch and Sidney Clarke, with William James Gault being the first nonprovisional mayor elected in 1890[1][3].
Oklahoma City grew rapidly as a distribution and marketing center for crops, livestock, and cattle, benefiting from its strategic location along key railroads[2][4]. The city became the state capital in 1910 after a popular vote, replacing Guthrie, which had previously held that status since Oklahoma's statehood in 1907[1][3][4]. The Oklahoma State Capitol building was completed in 1917, and a dome was added much later in 2002[3].
A significant driver of Oklahoma City's growth was the discovery of oil within city limits in 1928, which led to a major oil boom, with as many as 1,400 wells producing oil at one time, including some on the state capitol grounds[2][4][5]. This boom transformed Oklahoma City into a major center of oil production, contributing substantially to its economy[2][5].
In the mid-20th century, Oklahoma City expanded its land area dramatically through annexation, becoming the largest U.S. city by land mass at the time[5]. It also developed important transportation infrastructure, including key interstate highways (I-35, I-40, and I-44) and Tinker Air Force Base, which further enhanced its strategic and economic importance[5]. Today, Oklahoma City remains a major commercial, cultural, and political hub in the region, known for its historical roots, energy sector, and ongoing urban development[4][5].