Data Dictionary: ACS 2006 (1-Year Estimates)
you are here: choose a survey survey data set table details
Data Source: U.S. Census Bureau
Table: B25050. Plumbing Facilities By Occupants Per Room By Year Structure Built [19]
Universe: Universe: Occupied housing units
Table Details
B25050. Plumbing Facilities By Occupants Per Room By Year Structure Built
Universe: Universe: Occupied housing units
Relevant Documentation:
Excerpt from: Social Explorer; U.S. Census Bureau; American Community Survey 2006 Summary File: Technical Documentation.
 
Plumbing Facilities
The data on plumbing facilities were obtained from Housing Question 9 in the 2006 American Community Survey. The question was asked at both occupied and vacant housing units. Complete plumbing facilities include: (a) hot and cold running water, (b) a flush toilet, and (c) a bathtub or shower. All three facilities must be located inside the house, apartment, or mobile home, but not necessarily in the same room. Housing units are classified as lacking complete plumbing facilities when any of the three facilities is not present.

Question/Concept History
The 1996-2006 American Community Survey questions were stand-alone questions that asked the respondent to answer either Yes, has all three facilities or No to the question of whether the housing unit had complete plumbing facilities, requiring that the facilities all be in the same unit. Starting in 2006, the structure of the question changed and combined plumbing facilities with kitchen facilities and telephone service availability into one question to ask, Does this house, apartment, or mobile home have - and provided the respondent with a Yes or No checkbox for each component needed for complete facilities. An additional change introduced In 2006 included changing the description of the component hot and cold piped water to hot and cold running water.

Excerpt from: Social Explorer; U.S. Census Bureau; American Community Survey 2006 Summary File: Technical Documentation.
 
Occupants Per Room
'Occupants per room' is obtained by dividing the number of people in each occupied housing unit by the number of rooms in the unit. The figures show the number of occupied housing units having the specified ratio of people per room. Although the Census Bureau has no official definition of crowded units, many users consider units with more than one occupant per room to be crowded. 'Occupants per room' is rounded to the nearest hundredth.

Excerpt from: Social Explorer; U.S. Census Bureau; American Community Survey 2006 Summary File: Technical Documentation.
 
Year Structure Built
The data on year structure built were obtained from Housing Question 2 in the 2006 American Community Survey. The question was asked at both occupied and vacant housing units. Year structure built refers to when the building was first constructed, not when it was remodeled, added to, or converted. Housing units under construction are included as vacant housing if they meet the housing unit definition, that is, all exterior windows, doors, and final usable floors are in place. For mobile homes, houseboats, RVs, etc., the manufacturer's model year was assumed to be the year built. The data relate to the number of units built during the specified periods that were still in existence at the time of interview.

Median Year Structure Built
Median year structure built divides the distribution into two equal parts: one-half of the cases falling below the median year structure built and one-half above the median. Median year structure built is computed on the basis of a standard distribution (See the "Standard Distributions" section under "Derived Measures.") The median is rounded to the nearest calendar year. Median age of housing can be obtained by subtracting median year structure built from survey year. For example, if the median year structure built is 1968, the median age of housing in that area is 40 years (2006 minus 1968). (For more information on medians, see "Derived Measures.")

Limitation of the Data
Data on year structure built are more susceptible to errors of response and non-reporting than data for many other questions because respondents must rely on their memory or on estimates by people who have lived in the neighborhood a long time.

Question/Concept History
The 1996-1998 American Community Survey question provided a write-in space for the respondent to enter a year. Since 1999, the question provided 9 pre-coded response categories which showed ranges of years. The response categories were updated starting in 2003 to provide detail for recently built structures.