Posted in Uncategorized Oklahoma – New World Encyclopedia December 2, 2024 Oklahoma is the 20th-largest state in the United States, covering an area of 69,898 square miles (181,196 km²), with 68,667 square miles (110,508.8 km²) of land and 1,231 square miles (1,981.1 km²) of water. https://www.newworldencyclopedia.org/entry/Oklahoma