Canadian County is a county located in the U.S. state of Oklahoma. As of the 2020 census, the population was 154,405, making it the fourth most populous county in Oklahoma. Its county seat is El Reno.
The county is named for the Canadian River, which forms part of its southern border. The river may have been named for early European explorers who were fur traders and trappers from New France, or pre-1763 colonial Canada.
Jesse Lee Reno (April 20, 1823 – September 14, 1862) was a career United States Army officer who served in the Mexican–American War, in the Utah War, on the western frontier and as a Union General during the American Civil War from West Virginia. Known as a "soldier's soldier" who fought alongside his men, he was killed while commanding a corps at Fox's Gap during the Battle of South Mountain. Reno, Nevada; Reno County, Kansas; Reno, Ohio; El Reno, Oklahoma; Reno, Pennsylvania; Fort Reno in Oklahoma; and Fort Reno Park in Washington, D.C. were named after him.
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