Billings is the largest city in the U. S. state of Montana, with a population estimated at 109,550 as of 2018. Located in the south-central portion of the state, it is the seat of Yellowstone County and the principal city of the Billings Metropolitan Area, which has a population of 171,677.
It has a trade area of over 500,000. Billings was nicknamed the "Magic City" because of its rapid growth from its founding as a railroad town in March 1882. The city is named for Frederick H. Billings, a former president of the Northern Pacific Railroad. With one of the largest trade areas in the United States, Billings is the trade and distribution center for much of Montana east of the Continental Divide, Northern Wyoming, and western portions of North Dakota and South Dakota. Billings is also the largest retail destination for much of the same area. The city is experiencing rapid growth and a strong economy; it has had and is continuing to have the largest growth of any city in Montana. Parts of the metro area are seeing hyper growth. From 2000 to 2010 Lockwood, an eastern suburb, saw growth of 57. 8%, the largest growth rate of any community in Montana.