Iowa's 3rd Congressional District is located in the central part of the state and includes the city of Des Moines, which is the state capital. The district encompasses several counties, including Polk, Dallas, and Warren. It is known for its diverse population and a mix of urban and rural areas. The district is represented in the U.S. House of Representatives and has been a competitive area in elections. It has historically leaned toward both major political parties, making it a key battleground in Iowa politics. The current representative is Zach Nunn, who took office in 2023.