Sioux Falls is the most populous city in the U.S. state of South Dakota and the 131st-most populous city in the United States. It is the county seat of Minnehaha County and also extends into Lincoln County to the south, which continues up to the Iowa state line. As of 2020, Sioux Falls had a population of 192,517, which was estimated in 2022 to have increased to 202,600.
The Sioux Falls metro area accounts for more than 30% of the state's population. Chartered in 1856 on the banks of the Big Sioux River, the city is situated in the rolling hills at the junction of interstates 29 and 90.