Data Dictionary: ACS 2009 (1-Year Estimates)
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Data Source:U.S. Census Bureau
Table: B17011. Aggregate Income Deficit (Dollars) in the Past 12 Months for Families by Family Type [5]
Universe: Families with income in the past 12 months below the poverty level
Table Details
B17011. Aggregate Income Deficit (Dollars) in the Past 12 Months for Families by Family Type
Universe: Families with income in the past 12 months below the poverty level
Relevant Documentation:
Aggregate Income
Aggregate income is the sum of all incomes for a particular universe. Aggregate income is subject to rounding, which means that all cells in a matrix are rounded to the nearest hundred dollars. (For more information, see "Aggregate" under "Derived Measures".)

Family Households
A family consists of a householder and one or more other people living in the same household who are related to the householder by birth, marriage, or adoption. All people in a household who are related to the householder are regarded as members of his or her family. A family household may contain people not related to the householder, but those people are not included as part of the householder's family in tabulations. Thus, the number of family households is equal to the number of families, but family households may include more members than do families. A household can contain only one family for purposes of tabulations. Not all households contain families since a household may be comprised of a group of unrelated people or of one person living alone - these are called nonfamily households. Families are classified by type as either a "married-couple family" or "other family" according to the sex of the householder and the presence of relatives. The data on family type are based on answers to questions on sex and relationship that were asked of all people.

  • Married-Couple Family - A family in which the householder and his or her spouse are listed as members of the same household.
  • Other Family: Male Householder, No Wife Present - A family with a male householder and no spouse of householder present.
  • Female Householder, No Husband Present - A family with a female householder and no spouse of householder present.


Family households and married-couple families do not include same-sex married couples even if the marriage was performed in a state issuing marriage certificates for same-sex couples. Same sex couple households are included in the family households category if there is at least one additional person related to the householder by birth or adoption.

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