Park County, Wyoming  Park County is a county in the U.S. state of Wyoming. As of the 2010 United States Census, the population was 28,205. The county seat is Cody. Park County is a mecca for tourists. The county has over 53 percent of Yellowstone National Park's land area. Many attractions abound, including the Buffalo Bill Historical Center, the Cody Stampede Rodeo, the Ghost Town of Kirwin, and the western museum, Old Trail Town. Wyoming gained separate territorial status in 1868. Before that, most of the state's area was included in either Laramie County (part of the Dakota Territory) or as unorganized territory within the Dakota Territory. Wyoming Territory was established on July 25, 1868, at which time Laramie County was assigned to this jurisdiction. The area now known as Park County was established as Carter County, then Sweetwater County. In 1884 it was assigned to Fremont County; this continued until 1896, when it was assigned to Big Horn County. Wyoming achieved statehood in 1890. The area of present-day Park Continued as part of Big Horn County until 1909, when Park County was authorized. The county governing structure was put in place during 1911; a courthouse was constructed 1911–1912. An addition to the building was completed in 1983, and the complete building was restored in 1985. The county was named for Yellowstone National Park which is mostly within the limits of Park County. In 1913, Hot Springs County was created from portions of Park County, Big Horn County, and Fremont County. Park County also had minor boundary adjustments in 1929 and 1931, but otherwise its boundaries have remained unchanged. Much of Park County is held under state or federal control. Most of the Shoshone National Forest, the first national forest, and a portion of Yellowstone National Park, the first national park, fall within Park County boundaries. Three rivers flow through Park County: the Greybull and Shoshone Rivers which are tributaries to the Big Horn River, and the Clark's Fork River which flows into the Yellowstone River. According to the US Census Bureau, the county has a total area of , of which is land and (0.4%) is water. As of the 2000 United States Census, there were 25,786 people, 10,312 households, and 7,094 families in the county. The population density was 4 people per square mile (1/km²). There were 11,869 housing units at an average density of 2 per square mile (1/km²).