Derby is a city located in Sedgwick County, Kansas, United States. It is a vibrant and growing community with a population of approximately 24,000 residents. The city is known for its friendly and welcoming atmosphere, as well as its strong sense of community. Derby offers a range of amenities and attractions for residents and visitors alike. The city is home to several parks and recreational facilities, including the Rock River Rapids Aquatic Park and the Derby Skate Park. There are also numerous shopping and dining options, as well as a variety of cultural and entertainment venues.