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Osceola County is a county located in the U.S. state of Iowa. As of the 2020 census the population was 6,192, and was estimated to be 5,980 in 2025, making it the fifth-least populous county in Iowa. It is named for Seminole war chief Osceola. The county seat and the largest city is Sibley, named for H. H. Sibley of Minnesota.
Description adapted from Wikipedia, CC BY-SA 4.0.
Osceola County was created on January 15, 1851 and organized on January 1, 1872. It was named after the eponymous chief of the Seminole. It is the smallest and most recent county in Iowa. In the same year the first settler arrived, Captain Eldred Huff, and laid his claim. On January 1, 1872, the county government conferred for the first time. The first courthouse, constructed of wood, was built in November of the following year and simultaneously served as the conference chamber, school and church. In September 1903, the second courthouse was finished and was wired for electricity in October 1915.
Adapted from Wikipedia, CC BY-SA 4.0.
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