Buffalo is the second largest city in the U.S. state of New York and the largest city in Western New York. As of July 2016, the population was 256,902. The city is the county seat of Erie County, and a major gateway for commerce and travel across the Canada–United States border, forming part of the bi-national Buffalo Niagara Region.

The Buffalo area was inhabited before the 17th century by the Native American Iroquois tribe and later by French settlers. The city grew significantly in the 19th and 20th centuries as a result of immigration, the construction of the Erie Canal and rail transportation, and its close proximity to Lake Erie. This growth provided an abundance of fresh water and an ample trade route to the Midwestern United States while grooming its economy for the grain, steel and automobile industries that dominated the city's economy in the 20th century. Since the city's economy relied heavily on manufacturing, deindustrialization in the latter half of the 20th century led to a steady decline in population. While some manufacturing activity remains, Buffalo's economy has transitioned to service industries with a greater emphasis on healthcare, research and higher education, which emerged following the Great Recession.

Buffalo is on the eastern shore of Lake Erie, at the head of the Niagara River, 16 miles south of Niagara Falls. Its early embrace of electric power led to the nickname "The City of Light". The city is also famous for its urban planning and layout by Joseph Ellicott, an extensive system of parks designed by Frederick Law Olmsted, as well as significant architectural works. Its culture blends Northeastern and Midwestern traditions, with annual festivals including Taste of Buffalo and Allentown Art Festival, two professional sports teams (Buffalo Bills and Buffalo Sabres), and a music and arts scene.