Sioux Falls (pronounced "sue falls") is the largest city in the state of South Dakota. The 2006 city population, according to the census bureau, is 144,900. The county seat of Minnehaha CountyGR6, Sioux Falls is the primary city of a metro area of 211,500. Chartered in 1856 on the banks of the Big Sioux River, many recognize Sioux Falls for its natural scenery, which includes a bike and walking trail that winds around the Big Sioux River. Situated on the prairie of the Great Plains at the junction of I-90 and I-29, Sioux Falls is a unique center of urban and rural interaction. Sioux Falls features a progressive business climate, many cultural venues, safe neighborhoods, and a suburban character, making Sioux Falls a vibrant and healthy community.

According to the 2000 censusGR2, there were 123,975 people, 49,731 households, and 30,783 families residing in the city. Currently the city is home to 144,900 persons with 66,778 households, and 44,242 families. The population density is 849.9/km˛ (2,201.4/mi˛). There are 51,680 housing units at an average density of 354.3/km˛ (917.7/mi˛).