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|Counties||Franklin, Delaware, and Fairfield|
|• Mayor||Michael B. Coleman (D)|
|• City||212.6 sq mi (550.5 km2)|
|• Land||210.3 sq mi (544.6 km2)|
|• Water||2.3 sq mi (5.9 km2)|
|Elevation||902 ft (275 m)|
|• Density||3,703/sq mi (1,429.7/km2)|
|Time zone||UTC-5 (EST)|
|• Summer (DST)||UTC-4 (EDT)|
Columbus is the capital city and largest city of the U.S. state of Ohio. It is in the middle of the state. The Ohio State Buckeyes and Columbus Blue Jackets play there. In 2010 there were 787,033 people.
Columbus is the third largest city in the American Midwest, and the fifteenth largest city in the United States of America. It is the county seat of Franklin County. The city has expanded and annexed portions of adjoining Delaware County and Fairfield County. It is named for explorer Christopher Columbus. The city was founded in 1812 at the confluence of the Scioto and Olentangy rivers. It became Ohio's state capital in 1816. The city has a diverse economy based on education, government, insurance, banking, fashion, defense, aviation, food, clothes, logistics, steel, energy, medical research, health care, hospitality, retail, and technology.
Columbus has many technology companies. It has the world's largest private research and development foundation, the Battelle Memorial Institute; CAS, or Chemical Abstracts Service, the world's largest clearinghouse of chemical information; NetJets, the world's largest fractional ownership jet aircraft fleet; and The Ohio State University, the nation's largest campus.
In 2008, MarketWatch named Columbus as the 7th best place to do business in the nation. In 2011, the city had five corporations named to the U.S. Fortune 500 list including Nationwide Mutual Insurance Company, American Electric Power, Limited Brands, Momentive Specialty Chemicals, and Big Lots. Major foreign corporations operating or with divisions in the city include Germany-based Siemens and Roxane Laboratories, Finland-based Vaisala, Tomasco Mulciber Inc., and A Y Manufacturing, as well as Switzerland-based ABB Group and Mettler Toledo.
- "Columbus (city) Quick Facts from the U.S. Census Bureau". http://quickfacts.census.gov/qfd/states/39/3918000.html. Retrieved November 26, 2011.
- "Places in Franklin County, OH". Find a County. National Association of Counties. Archived from the original on June 16, 2008. http://web.archive.org/web/20080616120530/http://www.naco.org/Template.cfm?Section=Find_a_County&Template=/cffiles/counties/county.cfm&id=39049. Retrieved 13 April 2010.
- "Leader of nation's biggest campus taking on tenure", Andrew Welsh-Huggins. Boston Globe. 4 February 2010. Retrieved 14 September 2010.
- Market Watch, Best Places to do business. Retrieved 26 July 2009.
- "Fortune 500", CNN Money. 2011. Retrieved 4 June 2011.