This report contains estimates of household money income in 1975 for the United States, regions, divisions, and States. The estimates were obtained from the Survey of Income and Education (SIE), which was conducted between April and July 1976, by the Bureau of the Census. This report updates 1970 census household money income estimates for States, divisions, and regions.
The primary focus of this report is to show income distributions by housing tenure and type of residence, cross-classified by various characteristics of households. Added emphasis has been placed on showing summary statistics. In addition to mean and median incomes, average household size and per capita income are shown along with each income distribution.
The detailed tables are divided into three separate sections. The first section (tables 1 through 5) contains income distributions by race and Spanish origin, type of household, and the presence of related children under 18 years of age. The tables in the first section are shown for the United States and the four major regions. The second section (tables 6 through 19) contains income distributions by age and tenure status cross-classified by size and type of household. These tables are shown for the United States, regions, and divisions. The third and final section (tables 20 through 28) contains income distributions at the State level for all households and husband-wife households. The comparable estimates for divisions, regions, and the total United States can be found in the second section.
In constructing a report of this nature, decisions had to be made on the selection of data to be shown at each geographical level. A broad range of data is shown at the region and division level whereas the range of data shown at the State level is quite restricted due to considerations of sampling variability. In addition, all summary measures (means, medians, etc.) were suppressed if a given distribution had less than 60 sample cases. However, in cases where the base of a distribution is small, or standard errors on median or mean incomes are large, care should be exercised when making comparisons between categories. Additional discussion of these considerations can be found in the Appendix in the section, "Source and Reliability of the Estimates."
Census statistics date back to 1790 and reflect the growth and change of the United States. Past census reports contain some terms that today’s readers may consider obsolete and inappropriate. As part of our goal to be open and transparent with the public, we are improving access to all Census Bureau original publications and statistics, which serve as a guide to the nation's history.