Richardson is a city in Dallas and Collin counties in the U.S. state of Texas. As of the 2010 census, the city had a total population of 99,223. In 2011 the population was estimated to be 107,684. Richardson is an affluent inner suburb of Dallas and home of the Telecom Corridor with a high concentration of telecommunications companies. More than 5,000 businesses have operations within Richardson's 28 square miles , including many of the world's largest telecommunications/networking companies: AT&T, Ericsson, Verizon, Cisco Systems, Samsung, MetroPCS, Texas Instruments, TriQuint... Semiconductor, and Fujitsu. In 2006, Richardson was ranked as the 15th best place to live in the United States by Money magazine. This ranked Richardson the 3rd best place to live in Texas. In 2007, the Morgan Quitno 14th Annual America's Safest and Most Dangerous Cities Awards pronounced Richardson the 69th safest city in America. In the same study Richardson ranked the 5th safest city in Texas. In 2008, Richardson was ranked as the 18th best place to live in the United States by Money magazine. This ranked Richardson the 4th best place to live in Texas.
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| County: | Dallas County, Collin County |
| Population: | 99,223 |
| Area: | 28.6 sq. mi. |
| Time zone: | Central Time zone |
| Also known as: | Richardson, Texas, Dallas County / Richardson city |