Billings is the most populous city in the U.S. state of Montana. Located in the south-central portion of the state, it serves as the county seat of Yellowstone County. As of the 2020 census, the city had a population of 117,116, while the surrounding metropolitan area is estimated to house approximately 193,000 people.
The city functions as a major trade and distribution center for much of Montana east of the Continental Divide. It is recognized as one of the largest trade areas in the United States and serves as a primary retail destination for the region. According to the Billings Chamber of Commerce, the area of commerce associated with the city covers more than 125,000 square miles.