Definitions: The share of children under age 18 who live in families with incomes below the federal poverty level.
The federal poverty definition consists of a series of thresholds based on family size and composition. In calendar year 2011, a family of two adults and two children fell in the “poverty” category if their annual income fell below $22,811. Poverty status is not determined for people in military barracks, institutional quarters, or for unrelated individuals under age 15 (such as foster children). The data are based on income received in the 12 months prior to the survey.
More...
Data Source: Population Reference Bureau, analysis of data from the U.S. Census Bureau, Census 2000 Supplementary Survey, 2001 Supplementary Survey, 2002 through 2011 American Community Survey.
The data for this measure come from the 2000 and 2001 Supplementary Survey and the 2002 through 2011 American Community Survey (ACS). The 2000 through 2004 ACS surveyed approximately 700,000 households monthly during each calendar year. In general but particularly for these years, use caution when interpreting estimates for less populous states or indicators representing small sub-populations, where the sample size is relatively small. Beginning in January 2005, the U.S. Census Bureau expanded the ACS sample to 3 million households (full implementation), and in January 2006 the ACS included group quarters. The ACS, fully implemented, is designed to provide annually updated social, economic, and housing data for states and communities. (Such local-area data have traditionally been collected once every ten years in the long form of the decennial census.)
More...
Footnotes:
S - Estimates suppressed when the confidence interval around the
percentage is greater than or equal to 10 percentage points. N.A. – Data
not available.
Data are provided for the 50 most populous cities according to the most
recent Census counts. Cities for which data is collected may change
over time.
A 90 percent confidence interval for each estimate can be found at
Children in poverty.
Note: Maps use the natural break classification method, which reflects patterns
in the data by dividing the map into naturally occurring groups. Using statistical tools, this method
determines cut-off points for each group by identifying large gaps in data values.
Note: The District of Columbia, Puerto Rico and the U.S. Virgin Islands are
not included in maps and rankings because they are not states and therefore comparisons on many
indicators of child well being are not meaningful.