Cincinnati is a city in southwestern Ohio, United States that lies on the Ohio River and is the county seat of Hamilton County^GR6. The city's most common nicknames include "The Queen City", "Cinci", and "Cinti".

As of the 2000 census, Cincinnati population was 331,285, making it the third largest city in Ohio and the 55th largest in the United States. It has a much larger metropolitan area, commonly called "Greater Cincinnati", which covers parts of Ohio, Kentucky and Indiana. The Cincinnati-Middletown-Wilmington Combined Statistical Area has a population of 2,050,175 people and is the 18th largest in the country. It is home to major-league sports, including the Reds, the first professional baseball team, as well as the Bengals, and the historic international tennis tournament The Cincinnati Masters & Women's Open, as well as major corporations such as Procter & Gamble, Kroger, GE-Aviation, Federated Department Stores (owner of Macy's, Bloomingdale's, Lord & Taylor), Convergys, Chiquita Brands International, Great American Insurance Company, The E. W. Scripps Company, the U.S. Playing Card Company and Fifth Third Bank. It is notably considered the first major American "boomtown", rapidly springing up in the heart of the country in the early 19th century to rival the coastal metropolises in size and wealth. However, by the end of the century its growth unexpectedly stopped and it was surpassed by many other inland cities in population. Cincinnati is also known for being architecturally distinct, having the largest collection of 19th century Italianate architecture in the country, primarily concentrated in the neighborhood of Over-the-Rhine, just north of downtown.