Mo. - Ill. This report presents demographic, social, economic, and housing statistics for census tracts from the 1980 Census of Population and Housing. With the 1990 Census, the form of disclosure avoidance will be changed. Previously, data was withheld if the information could be used to identify individuals, thus leaving gaps in the statistics. For the 1990 Census, however, data will be transferred from a statistically equivalent, but unrelated geographic area, thus providing consistent information without jeopardizing confidentiality. To maintain the confidentiality promised respondents and required by law, the Census Bureau takes precautions to make sure that its published data do not disclose information about specific individuals and housing units.
Some data is suppressed.
Counts of total population are never suppressed. Other characteristics for persons are shown only if there are 15 or more persons in the geographic area. Counts of total housing units, vacant housing units, year-round housing units, and occupied housing units are never suppressed. Characteristics of year-round housing units which are not classified by occupancy status are shown only when there are five or more of them in the geographic area. Characteristics of families, households, or occupied housing units are shown only if there are at least five occupied housing units within the geographic area.