Number of children under 18
For 2000 and 2010 data
Decennial Census Program Citation:
U.S. Census Bureau, Census 2000 Summary File 2, Matrices PCT3 and PCT4.
U.S. Census Bureau, Census 2010 Summary File 2, Tables PCT3 and PCT4.
For post-Decennial Census data (2011-2015)
Population Estimates Program Citation:
Annual Estimates of the Resident Population for Selected Age Groups by Sex for the United States, States, Counties, and Puerto Rico Commonwealth and Municipios: April 1, 2010 to July 1, 2015.
Source: U.S. Census Bureau, Population Division (Release Date: June 2016)
The Population Estimates Program data are revised to reflect updated input data and new Census Bureau population controls. Population estimates for previous years change with the release of each new 5-year Census estimate.