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Census.govPopulation Income Main Income DataIncome InequalityTables › Share of Aggregate Income Received by Each Fifth and Top 5 Percent of Families, 1947 to 1994

Share of Aggregate Income Received by Each Fifth and Top 5 Percent of Families, 1947 to 1994 (Families as of March of the following year.)


                                        Percent distribution of aggregate income 

             Number   Lowest  Second    Third   Fourth  Highest   Top  5    Gini
Year        (thous.)   fifth   fifth    fifth    fifth     fifth percent   ratio
1994../21/..69,313      4.2     10.0     15.7     23.3     46.9     20.1   0.426
1993../20/..68,506      4.1      9.9     15.7     23.3     47.0     20.3   0.429
1993../19/..68,506      4.2     10.1     15.9     23.6     46.2     19.1   0.420
1992../18/..68,216      4.3     10.5     16.5     24.0     44.7     17.6   0.404
1992........68,144      4.4     10.5     16.5     24.0     44.6     17.6   0.403
1991........67,173      4.5     10.7     16.6     24.1     44.2     17.1   0.397
1990........66,322      4.6     10.8     16.6     23.8     44.3     17.4   0.396
1989........66,090      4.6     10.6     16.5     23.7     44.6     17.9   0.401
1988........65,837      4.6     10.7     16.7     24.0     44.0     17.2   0.395
1987../17/..65,204      4.6     10.7     16.8     24.0     43.8     17.2   0.393
1986........64,491      4.6     10.8     16.8     24.0     43.7     17.0   0.392
1985../16/..63,558      4.6     10.9     16.9     24.2     43.5     16.7   0.389
1984........62,706      4.7     11.0     17.0     24.4     42.9     16.0   0.383
1983../15/..62,015      4.7     11.1     17.1     24.3     42.8     15.9   0.382
1982........61,393      4.7     11.2     17.1     24.3     42.7     16.0   0.380
1981........61,019      5.0     11.3     17.4     24.4     41.9     15.4   0.369
1980........60,309      5.1     11.6     17.5     24.3     41.6     15.3   0.365
1979../14/..59,550      5.2     11.6     17.5     24.1     41.7     15.8   0.365
1978........57,804      5.2     11.6     17.5     24.1     41.5     15.6   0.363
1977........57,215      5.2     11.6     17.5     24.2     41.5     15.7   0.363
1976../13/..56,710      5.4     11.8     17.6     24.1     41.1     15.6   0.358
1975../12/..56,245      5.4     11.8     17.6     24.1     41.1     15.5   0.357
1974./12/11/55,698      5.5     12.0     17.5     24.0     41.0     15.5   0.355
1973........55,053      5.5     11.9     17.5     24.0     41.1     15.5   0.356
1972........54,373      5.4     11.9     17.5     23.9     41.4     15.9   0.359
1971../10/..53,296      5.5     12.0     17.6     23.8     41.1     15.7   0.355
1970........52,227      5.4     12.2     17.6     23.8     40.9     15.6   0.353
1969........51,586      5.6     12.4     17.7     23.7     40.6     15.6   0.349
1968........50,823      5.6     12.4     17.7     23.7     40.5     15.6   0.348
1967../9/...49,834      5.4     12.2     17.5     23.5     41.4     16.4   0.358
1966../8/...49,214      5.6     12.4     17.8     23.8     40.5     15.6   0.349
1965../7/...48,509      5.2     12.2     17.8     23.9     40.9     15.5   0.356
1964........47,956      5.1     12.0     17.7     24.0     41.2     15.9   0.361
1963........47,540      5.0     12.1     17.7     24.0     41.2     15.8   0.362
1962../6/...47,059      5.0     12.1     17.6     24.0     41.3     15.7   0.362
1961../5/...46,418      4.7     11.9     17.5     23.8     42.2     16.6   0.374
1960........45,539      4.8     12.2     17.8     24.0     41.3     15.9   0.364
1959........45,111      4.9     12.3     17.9     23.8     41.1     15.9   0.361
1958........44,232      5.0     12.5     18.0     23.9     40.6     15.4   0.354
1957........43,696      5.1     12.7     18.1     23.8     40.4     15.6   0.351
1956........43,497      5.0     12.5     17.9     23.7     41.0     16.1   0.358
1955........42,889      4.8     12.3     17.8     23.7     41.3     16.4   0.363
1954........41,951      4.5     12.1     17.7     23.9     41.8     16.3   0.371
1953........41,202      4.7     12.5     18.0     23.9     40.9     15.7   0.359
1952../4/...40,832      4.9     12.3     17.4     23.4     41.9     17.4   0.368
1951........40,578      5.0     12.4     17.6     23.4     41.6     16.8   0.363
1950........39,929      4.5     12.0     17.4     23.4     42.7     17.3   0.379
1949../3/...39,303      4.5     11.9     17.3     23.5     42.7     16.9   0.378
1948........38,624      4.9     12.1     17.3     23.2     42.4     17.1   0.371
1947../2/...37,237      5.0     11.9     17.0     23.1     43.0     17.5   0.376
NOTES to Table 1:
1/  [not used]
2/  Based on 1940 census population controls.
3/  Implementation of expanded income questions to show wage and salary, farm
self-employment and nonfarm self-employment and all other nonearned income
separately.
4/  Implementation of 1950 census population controls.
5/  Implementation of first hot deck procedure to impute missing income entries
(all income data imputed if any missing).
6/  Implementation of 1960 census population controls.
7/  Implementation of new procedures to impute missing data only.
8/  Questionnaire expanded to ask eight income questions.
9/  Implementation of a new March CPS processing system.
10/ Implementation of 1970 population controls.
11/ Implementation of a new March CPS processing system.  Questionnaire expanded 
to ask eleven income questions.
12/ These estimates were derived using pareto interpolation and may differ from
published data which were derived using linear interpolation.
13/ First year medians are derived using both pareto and linear interpolation. 
Prior to this year all medians were derived using linear interpolation.
14/ Implementation of 1980 census population controls.  Questionnaire expanded
to show 27 possible values from 51 possible sources of income.
15/ Implementation of Hispanic population weighting controls.
16/ Recording of amounts for earnings from longest job increased to $299,999.
17/ Implementation of a new March CPS processing system.
18/ Implementation of 1990 census population controls.
19/ See footnote 20.  To maintain comparability, income data topcoded to 1992
limits.
20/  Data collection method changed from paper and pencil to computer-assisted
interviewing.  In addition, the March 1994 income supplement was revised to
allow for the coding of different income amounts on selected questionnaire
items.  Limits either increased or decreased in the following categories: 
earnings increased to $999,999; Social Security increased to $49,999;
Supplemental Security Income and Public Assistance increased to $24,999;
Veterans' Benefits increased to $99,999; Child Support and Alimony decreased to
$49,999.
21/ Introduction of new 1990 census sample design.

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Source: U.S. Census Bureau | Income |  Last Revised: September 12, 2012