Data Dictionary: ACS 2008 -- 2010 (3-Year Estimates)
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Data Source: U.S. Census Bureau
Table: B19313C. Aggregate Income In The Past 12 Months (In Inflation-Adjusted Dollars) For The Population 15 Years And Over (American Indian And Alaska Native Alone) [1]
Universe: American Indian and Alaska Native alone population 15 years and over
Table Details
B19313C. Aggregate Income In The Past 12 Months (In Inflation-Adjusted Dollars) For The Population 15 Years And Over (American Indian And Alaska Native Alone)
Universe: American Indian and Alaska Native alone population 15 years and over
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.")

Excerpt from: Social Explorer; U.S. Census Bureau; American Community Survey 2008-2010 Summary File: Technical Documentation.
 
American Indian or Alaska Native
A person having origins in any of the original peoples of North and South America (including Central America) and who maintains tribal affiliation or community attachment. This category includes people who indicate their race as "American Indian or Alaska Native" or report entries such as Navajo, Blackfeet, Inupiat, Yup'ik, or Central American Indian groups, or South American Indian groups.

Respondents who identified themselves as "American Indian or Alaska Native" were asked to report their enrolled or principal tribe. Therefore, tribal data in tabulations reflect the written entries reported on the questionnaires. Some of the entries (for example, Metlakatla Indian Community and Umatilla) represent reservations or a confederation of tribes on a reservation. The information on tribe is based on self-identification and therefore does not reflect any designation of federally or state-recognized tribe. The information for the 2010 ACS was derived from the American Indian and Alaska Native Tribal Classification List for Census 2000 and updated from 2002 to 2009 based on the annual Federal Register notice entitled "Indian Entities Recognized and Eligible to Receive Services From the United States Bureau of Indian Affairs," Department of the Interior, Bureau of Indian Affairs, issued by OMB, and through consultation with American Indian and Alaska Native communities and leaders.