Is the 1980 census available?
Data availability Microdata from the 1980 census are freely available through the Integrated Public Use Microdata Series. Aggregate data for small areas, together with electronic boundary files, can be downloaded from the National Historical Geographic Information System.
How many census tracts are in Ohio?
2,952 census tracts
CENSUS TRACTS/BLOCK GROUPS/BLOCKS Ohio has 2,952 census tracts, 9,238 block groups, and 365,344 census blocks.
Are census tracts smaller than ZIP codes?
Yes, you can get data for Census tracts, block groups and blocks – all of which tend to be smaller than zip codes. Census tracts generally have a population size between 1,200 and 8,000 people, with an optimum size of 4,000 people. The most current Census data are available for Census tracts.
What is the difference between census blocks and tracts?
A block group is a subdivision of a census tract and contains a cluster of blocks. Block groups usually have between 250 and 550 housing units. A census block is the smallest geographic census unit. Blocks can be bounded by visible features—such as streets—or by invisible boundaries, such as city limits.
How does the 1980 census compare to the 1970 census?
For those researchers interested in comparing 1980 Census data and 1970 Census data, several 1980 Census summary tape files (STF) are comparable to some of the 1970 Census summary counts. The 1980 STF1 is similar in subject matter and geographic detail to the 1970 First and Third Count files.
Where can I find supplementary documentation related to the 1980 census?
The unit also has custody of supplementary documentation related to the 1980 Census, such as the Bureau of the Census’ “Users Guide: Part C. Index to Summary Tape Files 1-4” (PHC80-R1-C, issued September 1983, 145 pages). Contact staff regarding the availability of supplementary documentation.
What is the documentation for the 1980 census in Puerto Rico?
Documentation often varies for Puerto Rico and other American territories. The unit also has custody of supplementary documentation related to the 1980 Census, such as the Bureau of the Census’ “Users Guide: Part C. Index to Summary Tape Files 1-4” (PHC80-R1-C, issued September 1983, 145 pages).