Aurora is the second most populous city in the U.S. state of Illinois, and the 112th largest city in the United States. The population in 2010 was 197,899. Once a mid-sized manufacturing city, Aurora has grown tremendously due to urban sprawl over the past 50 years. Originally founded within Kane County, Aurora's city limits and population now spill over into DuPage, Will and Kendall Counties. Between 2000 and 2003, the U.S. Census Bureau ranked Aurora as the 34th fastest growing city in the United States. From 2000 to 2009, the U.S. Census Bureau ranked the city as the 46th fastest growing city with a population of over 100,000.
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