• It aggregated the data for Alaska’s then 23 boroughs 
and census areas into 5 entities that it treated as the 
statistical equivalents of counties; 
• It did not provide separate data for independent cities 
and most counties that were coextensive with an 
incorporated place; and, 
• It did not include a few other counties and statis 
tically equivalent entities. 
8 The 41 entities included the 37 “census subareas” in 
Alaska and the 4 “quadrants” in Washington, D.C. 
9 The 40 entities include the 40 “census subareas” in 
Alaska. At the request of the government of the District 
of Columbia, the “quadrants” are not being used for the 
1990 census; they have been replaced by a single MCD 
called “Washington.” 
10 In agreement with the State of Hawaii, the Census 
Bureau does not recognize the city of Honolulu, which is 
coextensive with Honolulu County, as an incorporated 
place for purposes of statistical presentations. Instead, 
the State delineates, and the Census Bureau provides 
data for, CDPs that define the separate communities 
within Honolulu County. 
11 The 1987 economic censuses included only those 
incorporated places having a population of 2,500 or 
more, except for three smaller places. 
12 The 1987 economic censuses included as places those 
minor civil divisions in the six New England States, 
New York, New Jersey, and Pennsylvania that 
contained 10,000 or more people. 
13 In the six New England States, the 1987 economic 
censuses aggregated the data for those portions of 
counties that were not included in some metropolitan 
area as the statistical equivalents of places. 
14 This number includes 102,235 entities that the 
Census Bureau called enumeration districts — EDs - for 
the 1980 decennial census. All portions of the United 
States are covered by block groups for the 1990 census. 
15 Includes only those eligible areas participating 
under the provisions of Public Law 94-171. 
16 Data were tabulated by census block only for limited 
areas in the 1980 decennial census - urbanized areas 
and their vicinity, other incorporated places with a 
population of 10,000 or more, and areas that chose to 
contract with the Census Bureau for such data. (The 
latter category included 5 entire states: Georgia, 
Mississippi, New York, Rhode Island, and Virginia.) 
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System: A Census Bureau Innovation Serving Data 
Analysts.” Government Information Quarterly, 7(3), 
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LaMacchia, R.A., 1989. “The TIGER File and Redis 
tricting.” Paper presented at the Conference on Re 
apportionment and the 1990 Census, Orlando, FL-USA. 
LaMacchia, R.A. and S.G. Tomasi, 1990. “Planned 
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Marx, R.W., 1986. “The TIGER System: Automating 
the Geographic Structure of the United States Census.” 
Government Publications Review, 13, pp. 181-201. 
Marx, R.W., 1988. “LIS/GIS Activities of the United 
States Census Bureau.” Paper presented at an infor 
mation exchange sponsored by the United States 
Embassy, Bonn, Federal Republic of Germany. 
Marx, R.W., 1990a. “Census Geography.” Applied 
Community Research, Monograph Bl, American 
Chamber of Commerce Researchers Association, 
Alexandria, VA-USA. 
Marx, R.W. (guest editor), et al., 1990b. “Special 
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Washington, DC-USA. 
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