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Data Dictionary: ACS 2008 (1-Year Estimates)
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Data Source: U.S. Census Bureau
Table: B98002. Unweighted Group Quarters Population Sample [2]
Universe: Universe: Population in Group Quarters
Table Details
B98002. Unweighted Group Quarters Population Sample
Universe: Universe: Population in Group Quarters
Relevant Documentation:
Excerpt from: Social Explorer; U.S. Census Bureau; American Community Survey 2008 Summary File: Technical Documentation.
  ACS 2008-1yr Summary File: Technical Documentation -> Appendix B. Subject Definitions -> Quality Measures -> Sample Size
Sample Size
Initially Selected Housing Unit Addresses
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The number of addresses in each state and for the nation that were selected for the ACS sample for a particular year. Each year's sample is systematically divided into 12 monthly samples for ACS interviewing. This initial number includes addresses later determined to be commercial or nonexistent, as well as housing units that are not interviewed due to subsampling for personal visit follow-up, refusals or other reasons.
Housing Unit Final Interviews
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The final number of interviews across all three modes of data collection for the ACS in a given year. This number includesoccupied and vacant housing units that were interviewed by mail, telephone, or personal visit methods between January 1 - December 31. It excludesaddresses determined to be nonexistent or commercial, and addresses not selected in the subsample for personal visit follow-up, and addresses that are not interviewed due to refusals or other reasons.
Group Quarters Person Initial Sample Selected
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The number of people living in GQs that could be contacted for ACS interviewing in a given year for a given geographic area. Each year's sample is systematically divided into 12 monthly samples for ACS interviewing. This initial number includes people thought to be in group quarters that were later determined to be out of scope or nonexistent, as well as people not interviewed due to the group quarter refusing entry, the person refusing to respond, or other reasons.

Group Quarters Person Final Interviews
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The final number of person interviews for the ACS for those living in group quarters in a given year for a given geographic area.
Excerpt from: Social Explorer; U.S. Census Bureau; American Community Survey 2008 Summary File: Technical Documentation.
  ACS 2008-1yr Summary File: Technical Documentation -> Appendix B. Subject Definitions -> Living Quarters -> Group Quarters
Group Quarters
A group quarters is a place where people live or stay, in a group living arrangement, that is owned or managed by an entity or organization providing housing and/or services for the residents. These services may include custodial or medical care as well as other types of assistance, and residency is commonly restricted to those receiving these services. This is not a typical household-type living arrangement. People living in group quarters usually are not related to each other. Group quarters include such places as college residence halls, residential treatment centers, skilled nursing facilities, group homes, military barracks, correctional facilities, and workers dormitories.
Institutional Group Quarters
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Includes facilities for people under formally authorized, supervised care or custody at the time of interview, such as correctional facilities, nursing facilities/skilled nursing facilities, in-patient hospice facilities, mental (psychiatric) hospitals, group homes for juveniles, and residential treatment centers for juveniles.
Noninstitutional Group Quarters
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Includes facilities that are not classified as institutional group quarters, such as college/university housing, group homes intended for adults, residential treatment facilities for adults, workers group living quarters and Job Corps centers, and religious group quarters.

A complete description of the types of group quarters included in the 2008 ACS is located on the "Appendix G: Code Lists".
Comparability
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Collection of data from group quarters began in the 2006 American Community Survey. No data exist for prior ACS years.