As detailed in this report, children living in poverty are vulnerable to environmental, educational, health, and safety risks. Compared with their peers, children living in poverty, especially young children, are more likely to have cognitive, behavioral, and socioemotional difficulties, and throughout their lifetime they are more likely to complete fewer years of school and experience more years of unemployment.32, 33, 34 This indicator is based on the official poverty measure for the United States as defined in Office of Management and Budget Statistical Policy Directive 14.35
Indicator Econ1.A: Percentage of related children ages 0–17 living in poverty by family structure, 1980–2009

NOTE: Related children are persons ages 0–17 who are related to the householder by birth, marriage, or adoption, but are not themselves householders, spouses, or reference persons. In 2009, the poverty threshold for a two-parent, two-child family was $21,756. The proportion of children in male-householder families (no spouse present) historically has been small. Select data for this group are available as part of Detailed Tables at http://www.census.gov/hhes/www/poverty/data/index.html.
SOURCE: U.S. Census Bureau, Current Population Survey, Annual Social and Economic Supplements.
Children's family income distribution provides a broader picture of children's economic circumstances.
Indicator Econ1.B: Percentage of related children ages 0–17 by family income relative to the poverty line, 1980–2009

NOTE: Estimates refer to children ages 0–17 who are related to the householder. The income classes are derived from the ratio of the family's income to the family's poverty threshold. A child living in extreme poverty is defined as a child living in a family with income less than 50 percent of the poverty threshold. Below poverty, but above extreme poverty, is defined as 50–99 percent of the poverty threshold. Low income is defined as 100–199 percent of the poverty threshold. Medium income is defined as 200–399 percent of the poverty threshold. High income is defined as being at or above 400 percent of the poverty threshold. For example, in 2009, a family of four with two children would be in extreme poverty if their income was less than $10,878 (50 percent of $21,756). The same family would be classified as low income if their income was at least $21,756 and less than $43,512.
SOURCE: U.S. Census Bureau, Current Population Survey, Annual Social and Economic Supplements.
ECON1.A HTML Table, ECON1.B HTML Table
2 Federal surveys now give respondents the option of reporting more than one race. Therefore, two basic ways of defining a race group are possible. A group such as Black may be defined as those who reported Black and no other race (the race-alone or single-race concept) or as those who reported Black regardless of whether they also reported another race (the race-aloneor- in-combination concept). This indicator shows data using the first approach (race alone). Use of the single-race population does not imply that it is the preferred method of presenting or analyzing data. The U.S. Census Bureau uses a variety of approaches. Data on race and Hispanic origin are collected separately. Persons of Hispanic origin may be of any race.
32 Strohschein, L. (2005, December). Household income histories and child mental health trajectories. Journal of Health and Social Behavior, 46(4), 359–357.
33 Duncan, G., and Brooks-Gunn, J. (Eds.). (1997). Consequences of growing up poor. New York, NY: Russell Sage Press.
34 Wagmiller, Jr., R.L., Lennon, M.C., Kuang, L., Alberti, P.M., Aber, J.L. (2006, October). The dynamics of economic disadvantage and children's life changes. American Sociological Review, 71(5), 847–866.
35 Following Office of Management and Budget (OMB) Statistical Policy Directive 14, poverty status is determined by comparing a family's (or an unrelated individual's) income to one of 48 dollar amounts called thresholds. The thresholds vary by the size of the family and the members' ages. In 2009, the poverty threshold for a family with two adults and two children was $21,756. For further details, see http://www.census.gov/hhes/www/poverty/poverty.html.
36 Official poverty estimates for children are compiled in two ways—estimates for all children for whom poverty status can be determined and estimates for related children. Related children are related to the householder by birth, marriage, or adoption and are not themselves householders, spouses, or reference persons. In 2009, all children included an additional 1.2 million children who were not related to the householder.