- Pierre is the capital city of South Dakota, located in the central part of the state. It has a population of approximately 14,000 people, as of 2020. The city is known for its scenic beauty, including the Missouri River, which runs through the city. Pierre is also an important center for government and serves as the administrative hub for South Dakota. It is home to the South Dakota State Capitol building and various state government offices. The city offers a range of recreational activities, including fishing, boating, and hiking, making it a popular destination for outdoor enthusiasts. Additionally, Pierre has a rich history and cultural heritage, with several museums, art galleries, and historical sites for visitors to explore.