Census of Population and Housing, 2000 [United States]: Census Tract Relationship Files (CTRF) (ICPSR 13287)
Principal Investigator(s): United States Department of Commerce. Bureau of the Census
Summary: Part of the Census 2000 geographic product series, Census Tract Relationship Files (CTRF) show how 1990 census tracts relate to 2000 census tracts. The files consist of one record for each 1990 census tract/2000 census tract spatial set. A spatial census tract set is defined as the area that is uniquely shared between a 1990 census tract and a 2000 census tract. The CTRF consist of sets of four files for each of the United States and territories. The purpose of these files is to assist us... (more info)
This data is freely available.
WARNING: Because this study has many datasets, the download all files option has been suppressed, and you will need to download one dataset at a time.
U.S. Dept. of Commerce. Bureau of the Census. CENSUS OF POPULATION AND HOUSING, 2000 [UNITED STATES]: CENSUS TRACT RELATIONSHIP FILES (CTRF). Washington, DC: U.S. Dept. of Commerce. Bureau of the Census [producer], 2001. Ann Arbor, MI: Inter-university Consortium for Political and Social Research [distributor], 2002. doi:10.3886/ICPSR13287.v1
Persistent URL: http://dx.doi.org/10.3886/ICPSR13287.v1
Scope of Study
Summary: Part of the Census 2000 geographic product series, Census Tract Relationship Files (CTRF) show how 1990 census tracts relate to 2000 census tracts. The files consist of one record for each 1990 census tract/2000 census tract spatial set. A spatial census tract set is defined as the area that is uniquely shared between a 1990 census tract and a 2000 census tract. The CTRF consist of sets of four files for each of the United States and territories. The purpose of these files is to assist users in determining the relationships between 1990 and 2000 census tracts. Two of these files are state-level entity-based census tract relationship files, one providing a measurement of change based on population, the second measures change using street-side mileage. The other two files specifically list census tracts that have experienced significant change (2.5 percent or greater): one from the perspective of 1990 census tracts, the other from the perspective of Census 2000. A set of files for the United States as a whole is also provided.
Geographic Coverage: Alabama, Alaska, Arizona, Arkansas, California, Colorado, Connecticut, Delaware, District of Columbia, Florida, Georgia, Hawaii, Idaho, Illinois, Indiana, Iowa, Kansas, Kentucky, Louisiana, Maine, Maryland, Massachusetts, Michigan, Minnesota, Mississippi, Missouri, Montana, Nebraska, Nevada, New Hampshire, New Jersey, New Mexico, New York, North Carolina, North Dakota, Ohio, Oklahoma, Oregon, Puerto Rico, Pennsylvania, Rhode Island, South Carolina, South Dakota, Tennessee, Texas, United States, Utah, Vermont, Virginia, Washington, West Virginia, Wisconsin, Wyoming
Universe: All census tracts in the United States and its territories whose boundaries and/or population counts changed between the 1990 and 2000 censuses.
Data Types: geographic reference data
Data Collection Notes:
(1) When complete, the data collection will include 57 sets of files, one set for each of the 50 states plus separate files for the United States as a whole, the District of Columbia, Puerto Rico, American Samoa, Guam, the Northern Mariana Islands, and the U.S. Virgin Islands. (2) In previous censuses, these files were called "comparability" files instead of relationship files. (3) The codebook is provided by ICPSR as a Portable Document Format (PDF) file. The PDF file format was developed by Adobe Systems Incorporated and can be accessed using PDF reader software, such as the Adobe Acrobat Reader. Information on how to obtain a copy of the Acrobat Reader is provided on the ICPSR Web site.
United States Bureau of the Census's internal TIGER database
Original ICPSR Release: 2002-10-04
- 2006-01-12 All files were removed from dataset 229 and flagged as study-level files, so that they will accompany all downloads.
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