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Income 1999

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Table C.  Selected Measures of Household Income Dispersion:  1967 to 1999

(Income in 1999 dollars)
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Measures of Income Dispersion           1999     1998     1997     1996 1995 1/  1993 2/      1990     1985 1980 3/  1975 4/      1970     1968     1967
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HOUSEHOLD INCOME AT
  SELECTED
  PERCENTILES

  20th percentile upper limit        17,196   16,472   15,985   15,681   15,742   14,950   15,933   15,483   15,296   14,896   14,873   14,685   13,769
  50th (median)                      40,816   39,744   38,411   37,686   37,251   36,019   38,168   36,568   35,850   34,980   35,232   34,217   32,783
  80th percentile upper limit        79,375   76,656   74,217   72,220   71,192   69,522   70,368   67,831   64,170   60,759   59,141   56,070   54,345
  95th percentile lower limit       142,021  135,119  131,360  126,930  123,529  120,643  120,773  113,435  104,252   96,880   93,498   87,719   87,201

HOUSEHOLD INCOME
  RATIOS OF SELECTED
  PERCENTILES

95th/20th                              8.26     8.20     8.22     8.09     7.85     8.07     7.58     7.33     6.82     6.50     6.29     5.97     6.33
95th/50th                              3.48     3.40     3.42     3.37     3.32     3.35     3.16     3.10     2.91     2.77     2.65     2.56     2.66
80th/50th                              1.94     1.93     1.93     1.92     1.91     1.93     1.84     1.85     1.79     1.74     1.68     1.64     1.66
80th/20th                              4.62     4.65     4.64     4.61     4.52     4.65     4.42     4.38     4.20     4.08     3.98     3.82     3.95
20th/50th                              0.42     0.41     0.42     0.42     0.42     0.42     0.42     0.42     0.43     0.43     0.42     0.43     0.42

MEAN HOUSEHOLD
  INCOME OF QUINTILES

  Lowest quintile                     9,940    9,427    9,209    9,127    9,128    8,546    9,171    8,976    9,075    8,994    8,185    8,096    7,463
  Second quintile                    24,436   23,802   22,938   22,401   22,298   21,509   22,982   22,188   21,901   21,356   21,763   21,397   20,345
  Third quintile                     40,879   39,828   38,590   37,680   37,284   36,055   37,961   36,750   36,047   34,942   35,047   33,934   32,485
  Fourth quintile                    63,555   61,597   59,770   58,317   57,314   56,032   57,234   55,266   53,075   50,742   49,403   47,342   45,450
  Highest quintile                  135,401  130,346  127,430  122,655  119,605  116,739  111,071  101,943   93,225   88,366   87,471   82,911   82,364

SHARES OF HOUSEHOLD
  INCOME OF QUINTILES

Lowest quintile                         3.6      3.6      3.6      3.7      3.7      3.6      3.9      4.0      4.3      4.4      4.1      4.2      4.0
Second quintile                         8.9      9.0      8.9      9.0      9.1      9.0      9.6      9.7     10.3     10.5     10.8     11.1     10.8
Third quintile                         14.9     15.0     15.0     15.1     15.2     15.1     15.9     16.3     16.9     17.1     17.4     17.5     17.3
Fourth quintile                        23.2     23.2     23.2     23.3     23.3     23.5     24.0     24.6     24.9     24.8     24.5     24.4     24.2
Highest quintile                       49.4     49.2     49.4     49.0     48.7     48.9     46.6     45.3     43.7     43.2     43.3     42.8     43.8

Gini coefficent of income
 inequality                            0.457    0.456   0.459    0.455    0.450    0.454    0.428    0.419    0.403    0.397    0.394    0.388    0.399
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     1/Reflects the 1990 census sample redesign.
     2/Reflects the implementation of 1990 census adjusted population controls, a change in data collection method from paper-pencil to computer-
assisted interviewing (CAI), and changes in income reporting limits.  For detailed information concerning the impact of these changes, see Current
Population Reports, Series P60-204, The Changing Shape of the Nation's Income Distribution, 1947 to 1998.
     3/Reflects implementation of 1980 census population contols.
     4/Reflects implementation of 1970 census population controls.

Source:  U.S. Census Bureau, Current Population Surveys, selected March Supplements.  See     
         http://www.census.gov/hhes/www/income/incomestats.html#incineq for the 
         complete table.  Data not available before 1967.


Source: U.S. Census Bureau | Income |  Last Revised: June 16, 2010