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Census Documentation

Historical documentation, 1980 and earlier, is available only in the scanned format as PDF files. There are plans to digitize this information into machine readable format and xml, but we are not sure when this will become available.  For now this is the best reference documentation we have access to. If you have any questions you may send us an email at support@socialexplorer.com.
Census 2000
   Summary File 1 Technical Documentation (PDF)  (5MB)
Summary File 2 Technical Documentation (PDF)  (4MB)
Summary File 3 Technical Documentation (PDF)  (6MB)
Summary File 4 Technical Documentation (PDF)  (5MB)
Census 2000 American Fact Finder link


Census 1990
Summary File 1 Technical Documentation (PDF)  (0.5MB)
   Summary File 3 Technical Documentation (PDF)  (1MB)
Census 1990 American Fact Finder link


Census 1980
Documentation Applicable to All Summary Tapes (PDF)  (10MB)
   
Summary Tape File 1:
STF1 Introduction and User Notes (PDF)  (0.3MB)
    STF1 Documentation (PDF)  (3MB)
STF1 Suppression Information (PDF)  (0.4MB)
    
Summary Tape File 2:
STF2 Introduction and User Notes (PDF) (2MB)
STF2 Documentation (PDF) (5MB)
STF2 Suppression (PDF)   (0.3MB)
   
Summary Tape File 3:
STF3 Introduction and User Notes (PDF)  (1MB)
STF3 Documentation (PDF)  (4.5MB)
STF3 Suppression (PDF) (0.2MB)


Census 1970
Full Documentation (PDF)  (23MB)


Census 1960
Note 1: Social Explorer uses the 1960 Elizabeth Mullen bogue file.
Note 2: Print files for better readability.
Census 1960 Tract Documentation (PDF) (3MB)
Census 1960 Tract Documentation - Elizabeth Mullen Bogue File (PDF) (6MB)


Census 1950
Note: Some data in Census 1950 tracts were entered by Social Explorer.
Census 1950 Tract Documentation - Elizabeth Mullen Bogue File (PDF) (3MB)


Census 1940
Note: Some data in Census 1950 tracts were entered by Social Explorer.
Census 1940 Tract Documentation - Elizabeth Mullen Bogue File (PDF) (2MB)