INCOME 1997 
        Table B. Selected Measures of Household Income Dispersion: 1967 to 1997 | 
       
      
        |   | 
       
      
        | (Income in 1997 dollars) | 
       
      
        |   | 
       
      
        | Measures of Income Dispersion | 
        1997 | 
        1996 | 
        1995 1/ | 
        1990 | 
        1985 | 
        1980 2/ | 
        1975 3/ | 
        1970 | 
        1968 | 
        1967 | 
       
      
        |   | 
       
      
        | Household Income at Selected Percentiles | 
       
      
        |   | 
       
      
        | 20th percentile upper limit | 
        15,400 | 
        15,107 | 
        15,165 | 
        15,350 | 
        14,916 | 
        14,736 | 
        14,351 | 
        14,328 | 
        14,147 | 
        13,264 | 
       
      
        | 50th (median) | 
        37,005 | 
        36,306 | 
        35,887 | 
        36,770 | 
        35,229 | 
        34,538 | 
        33,699 | 
        33,942 | 
        32,964 | 
        31,583 | 
       
      
        | 80th percentile upper limit | 
        71,500 | 
        69,576 | 
        68,585 | 
        67,792 | 
        65,347 | 
        61,821 | 
        58,534 | 
        56,976 | 
        54,017 | 
        52,355 | 
       
      
        | 95th percentile lower limit | 
        126,550 | 
        122,283 | 
        119,006 | 
        116,351 | 
        109,282 | 
        100,434 | 
        93,333 | 
        90,074 | 
        84,507 | 
        84,008 | 
       
      
        |   | 
       
      
        | Household Income Ratios of Selected Percentiles | 
       
      
        |   | 
       
      
        | 95th/20th | 
        8.22 | 
        8.09 | 
        7.85 | 
        7.58 | 
        7.33 | 
        6.82 | 
        6.50 | 
        6.29 | 
        5.97 | 
        6.33 | 
       
      
        | 95th/50th | 
        3.42 | 
        3.37 | 
        3.32 | 
        3.16 | 
        3.10 | 
        2.91 | 
        2.77 | 
        2.65 | 
        2.56 | 
        2.66 | 
       
      
        | 80th/50th | 
        1.93 | 
        1.92 | 
        1.91 | 
        1.84 | 
        1.85 | 
        1.79 | 
        1.74 | 
        1.68 | 
        1.64 | 
        1.66 | 
       
      
        | 80th/20th | 
        4.64 | 
        4.61 | 
        4.52 | 
        4.42 | 
        4.38 | 
        4.20 | 
        4.08 | 
        3.98 | 
        3.82 | 
        3.95 | 
       
      
        | 20th/50th | 
        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 | 
        8,872 | 
        8,793 | 
        8,794 | 
        8,835 | 
        8,647 | 
        8,743 | 
        8,665 | 
        7,885 | 
        7,799 | 
        7,189 | 
       
      
        | Second quintile | 
        22,098 | 
        21,581 | 
        21,481 | 
        22,141 | 
        21,375 | 
        21,099 | 
        20,574 | 
        20,966 | 
        20,614 | 
        19,600 | 
       
      
        | Third quintile | 
        37,177 | 
        36,300 | 
        35,919 | 
        36,571 | 
        35,404 | 
        34,727 | 
        33,662 | 
        33,763 | 
        32,692 | 
        31,295 | 
       
      
        | Fourth quintile | 
        57,582 | 
        56,182 | 
        55,216 | 
        55,139 | 
        53,242 | 
        51,132 | 
        48,884 | 
        47,594 | 
        45,608 | 
        43,786 | 
       
      
        | Highest quintile | 
        122,764 | 
        118,164 | 
        115,226 | 
        107,004 | 
        98,211 | 
        89,812 | 
        85,131 | 
        84,268 | 
        79,875 | 
        79,348 | 
       
      
        |   | 
       
      
        | Shares of Household Income of Quintiles | 
       
      
        |   | 
       
      
        | Lowest quintile | 
        3.6 | 
        3.7 | 
        3.7 | 
        3.9 | 
        4.0 | 
        4.3 | 
        4.4 | 
        4.1 | 
        4.2 | 
        4.0 | 
       
      
        | Second quintile | 
        8.9 | 
        9.0 | 
        9.1 | 
        9.6 | 
        9.7 | 
        10.3 | 
        10.5 | 
        10.8 | 
        11.1 | 
        10.8 | 
       
      
        | Third quintile | 
        15.0 | 
        15.1 | 
        15.2 | 
        15.9 | 
        16.3 | 
        16.9 | 
        17.1 | 
        17.4 | 
        17.5 | 
        17.3 | 
       
      
        | Fourth quintile | 
        23.2 | 
        23.3 | 
        23.3 | 
        24.0 | 
        24.6 | 
        24.9 | 
        24.8 | 
        24.5 | 
        24.4 | 
        24.2 | 
       
      
        | Highest quintile | 
        49.4 | 
        49.0 | 
        48.7 | 
        46.6 | 
        45.3 | 
        43.7 | 
        43.2 | 
        43.3 | 
        42.8 | 
        43.8 | 
       
      
        |   | 
       
      
        | Gini coefficient of income inequality | 
        0.459 | 
        0.455 | 
        0.450 | 
        0.428 | 
        0.419 | 
        0.403 | 
        0.397 | 
        0.394 | 
        0.388 | 
        0.399 | 
       
      
        |   | 
       
      
        | 1/ Reflects 1990 census population controls first
        implemented in 1993, 1990 census sample redesign, 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 -191, "A Brief Look at Postwar U.S. Income
        Inequality." | 
       
      
        | 2/ Reflects 1980 census population controls first
        implemented in March 1980. | 
       
      
        | 3/ Reflects 1970 census population controls first implemented
        in March 1972. | 
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        |   | 
       
      
        | Source: U.S. Bureau of the Census, March Current Population
        Survey. Data not available prior to 1967. | 
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