Social Explorer application is not quite ready for this screen size. Please head to your nearest desktop or tablet device. Visit Homepage
Basic plan
Create Account
Data Dictionary: ACS 2006 (1-Year Estimates)
you are here: choose a survey survey data set table variable details
Data Source: U.S. Census Bureau
Universe: Universe: Population under 18 years in households (excluding householders, spouses, and unmarried partners)
Variable Details
C09008. Presence of Unmarried Partner of Householder For Children Under 18 Years in Households
Universe: Universe: Population under 18 years in households (excluding householders, spouses, and unmarried partners)
C09008002 Presence of an unmarried partner of householder
Percent base:
Population under 18 years in households (excluding householders, spouses, and unmarried partners) (ACS06:C09008001)
Aggregation method:
Addition
Relevant Documentation:
Excerpt from: Social Explorer; U.S. Census Bureau; American Community Survey 2006 Summary File: Technical Documentation.
  ACS 2006-1yr Summary File: Technical Documentation -> Appendix B. Subject Definitions -> Population Variables -> Household Type and Relationship -> Relationship to Householder -> Nonrelatives -> Unmarried Partner
Unmarried Partner
An unmarried partner is a person age 15 years and over, who is not related to the householder, who shares living quarters, and who has a close personal relationship with the householder.
Excerpt from: Social Explorer; U.S. Census Bureau; American Community Survey 2006 Summary File: Technical Documentation.
  ACS 2006-1yr Summary File: Technical Documentation -> Appendix B. Subject Definitions -> Population Variables -> Household Type and Relationship -> Relationship to Householder -> Householder
Householder
The data on relationship to householder were derived from answers to Question 3, which was asked of all people in housing units. One person in each household is designated as the householder. In most cases, this is the person, or one of the people, in whose name the home is owned, being bought, or rented and who is listed on line one of the survey questionnaire. If there is no such person in the household, any adult household member 15 years old and over could be designated as the householder. Households are classified by type according to the sex of the householder and the presence of relatives. Two types of householders are distinguished: a family householder and a non-family householder. A family householder is a householder living with one or more individuals related to him or her by birth, marriage, or adoption. The householder and all people in the household related to him or her are family members. A non-family householder is a householder living alone or with non-relatives only.
Excerpt from: Social Explorer; U.S. Census Bureau; American Community Survey 2006 Summary File: Technical Documentation.
  ACS 2006-1yr Summary File: Technical Documentation -> Appendix B. Subject Definitions -> Population Variables -> Household Type and Relationship -> Relationship to Householder -> Child
Child
Includes a son or daughter by birth, a stepchild, or adopted child of the householder, regardless of the child's age or marital status. The category excludes sons-in-law, daughters-in-law, and foster children.

Excerpt from: Social Explorer; U.S. Census Bureau; American Community Survey 2006 Summary File: Technical Documentation.
  ACS 2006-1yr Summary File: Technical Documentation -> Appendix B. Subject Definitions -> Population Variables -> Age
Age
The data on age were derived from answers to Question 2. The age classification is based on the age of the person in complete years at the time of interview. Both age and date of birth are used in combination to calculate the most accurate age at the time of the interview. Inconsistently reported and missing values are assigned or imputed based on the values of other variables for that person, from other people in the household, or from people in other households ("hot deck" imputation). Data on age are used to determine the applicability of other questions for a particular individual and to classify other characteristics in tabulations. Age data are needed to interpret most social and economic characteristics used to plan and analyze programs and policies. Therefore, age data are tabulated by many different age groupings, such as 5-year age groups.
Median Age
back to top
The median age is the age that divides the population into two equal-size groups. Half of the population is older than the median age and half is younger. Median age is based on a standard distribution of the population by single years of age and is shown to the nearest tenth of a year. (See the sections on "Standard Distributions" and "Medians" under "Derived Measures.")
Age Dependency Ratio
back to top
The age dependency ratio is derived by dividing the combined under-18 and 65-and-over populations by the 18-to-64 population and multiplying by 100.
Old-Age Dependency Ratio
back to top
The old-age dependency ratio is derived by dividing the population 65 years and over by the 18-to-64 population and multiplying by 100.
Child Dependency Ratio
back to top
The child dependency ratio is derived by dividing the population under 18 years by the 18-to-64 population, and multiplying by 100.
Limitation of the Data
back to top
Caution should be taken when comparing population in age groups across time. The entire population continually ages into older age groups over time and babies fill in the youngest age group. Therefore, the population of a certain age is made up of a completely different group of people in 2000 and 2006. Since populations occasionally experience booms/increases and busts/decreases in births, deaths, or migration (for example, the postwar Baby Boom from 1946-1964), one should not necessarily expect that the population in an age group in Census 2000 should be similar in size or proportion to the population in the same age group in the 2006 ACS. For example, Baby Boomers were age 36 to 54 in Census 2000 while they were age 44 to 62 in the 2006 ACS. Therefore, the age group 55 to 59 would show a considerable increase in population when comparing Census 2000 data with the 2006 ACS data.
Beginning in 2006, the population in group quarters (GQ) is included in the ACS. Some types of GQ populations have age distributions that are very different from the household population. The inclusion of the GQ population could therefore have a noticeable impact on the age distribution. This is particularly true for areas with a substantial GQ population.
Question/Concept History
back to top
The 1996-2002 American Community Survey question asked for month, day, and year of birth before age. Since 2003, the American Community Survey question asked for age, followed by month, day, and year of birth. In 2006, an additional instruction was provided with the age and date of birth question on the American Community Survey questionnaire to report babies as age 0 when the child was less than 1 year old. The addition of this instruction occurred after 2005 National Census Test results indicated increased accuracy of age reporting for babies less than one year old.
Excerpt from: Social Explorer; U.S. Census Bureau; American Community Survey 2006 Summary File: Technical Documentation.
  ACS 2006-1yr Summary File: Technical Documentation -> Appendix B. Subject Definitions -> Population Variables -> Household Type and Relationship -> Household
Household
A household includes all the people who occupy a housing unit. (People not living in households are classified as living in group quarters.) A housing unit is a house, an apartment, a mobile home, a group of rooms, or a single room that is occupied (or if vacant, is intended for occupancy) as separate living quarters. Separate living quarters are those in which the occupants live separately from any other people in the building and which have direct access from the outside of the building or through a common hall. The occupants may be a single family, one person living alone, two or more families living together, or any other group of related or unrelated people who share living arrangements.