Columbus is the state capital and the largest city of and the most populous city in the U.S. State of Ohio. With a population of 892,533 as of 2018 estimates, it is the 14th-most populous city in the United States and one of the fastest growing large cities in the nation. This makes Columbus the third-most populous state capital in the US (after Phoenix, Arizona and Austin, Texas) and the second-most populous city in the Midwest (after Chicago, Illinois). It is the core city of the Columbus, OH Metropolitan Statistical Area, which encompasses ten counties. With a population of 2,078,725, it is Ohio's second-largest metropolitan area.
Columbus is the county seat of Franklin County. The municipality has also annexed portions of adjoining Delaware, Pickaway and Fairfield counties. Named for explorer Christopher Columbus, the city was founded in 1812, at the confluence of the Scioto and Olentangy rivers, and assumed the functions of state capital in 1816.
The city has a diverse economy based on education, government, insurance, banking, defense, aviation, food, clothes, logistics, steel, energy, medical research, health care, hospitality, retail, and technology. Columbus Region is home to the Battelle Memorial Institute, the world's largest private research and development foundation; Chemical Abstracts Service, the world's largest clearinghouse of chemical information; NetJets, the world's largest fractional ownership jet aircraft fleet; and Ohio State University, one of the largest universities in the United States. As of 2018, the city has the headquarters of four corporations in the U.S. Fortune 500: American Electric Power, Cardinal Health, L Brands, Nationwide, and Big Lots, just out of the top 500.
In 2016, Money Magazine ranked Columbus as one of "The 6 Best Big Cities", calling it the best in the Midwest, citing a highly educated workforce and excellent wage growth. In 2012, Columbus was ranked in BusinessWeek's 50 best cities in the United States. In 2013, Forbes gave Columbus an "A" grade as one of the top cities for business in the U.S. and later that year included the city on its list of Best Places for Business and Careers. Columbus was also ranked as the No. 1 up-and-coming tech city in the nation by Forbes in 2008, and the city was ranked a top-ten city by Relocate America in 2010.