Cincinnati is the third largest city in Ohio and the 65th largest city in the United States by population within the city limits. It is also the county seat of Hamilton County. Settled in 1788, the city is located on the border between Ohio and Kentucky at the confluence of the Ohio River and the Licking River. According to the 2010 census, the population of the metropolitan area was 2,214,954 - the 28th largest Metropolitan Statistical Area (MSA) in the United States and the largest based in Ohio. Residents of Cincinnati are called Cincinnatians.In the early 19th century, Cincinnati was an American boomtown in the heart of the country to rival the larger coastal cities in size and wealth, at one point being the 6th largest city in the United States by population, surpassed only by the older, established settlements of the Eastern Seaboard and New Orleans. Because it is the first major American city founded after the American Revolution as well as the first major inland city in the country, Cincinnati is sometimes thought of as the first purely American city. It developed initially without as much European immigration or influence that was taking place at the same time in eastern cities. However, by the end of the 19th century, with the shift from steamboats to railroads, Cincinnati's growth had slowed considerably and the city became surpassed in population by other inland cities, Chicago and St. Louis.