The table above displays population estimates data for all cities where data are available from the following dataset:
United States Census Bureau / American FactFinder. "Annual Estimates of the Resident Population: April 1, 2010 to July 1, 2014". 2014 Population Estimates Program. Web. May 2015. http://factfinder2.census.gov.
For all other cities where data aren't available in the above dataset, the following dataset is use:
United States Census Bureau. "B01001 Sex by Age." 2010 - 2014 American Community Survey. U.S. Census Bureau's American Community Survey Office. Web. 4 December 2015 http://ftp2.census.gov/.