Frequencies for first 10,000 rows of county variable in person dataset :

     County |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |        161        1.61        1.61
          3 |        110        1.10        2.71
          5 |        162        1.62        4.33
          7 |        177        1.77        6.10
          9 |         66        0.66        6.76
         11 |         31        0.31        7.07
         12 |         21        0.21        7.28
         13 |        918        9.18       16.46
         15 |        174        1.74       18.20
         17 |        104        1.04       19.24
         19 |        532        5.32       24.56
         20 |         31        0.31       24.87
         21 |        197        1.97       26.84
         23 |         66        0.66       27.50
         25 |        154        1.54       29.04
         27 |         62        0.62       29.66
         29 |        234        2.34       32.00
         31 |         93        0.93       32.93
         33 |         81        0.81       33.74
         35 |         47        0.47       34.21
         37 |      1,087       10.87       45.08
         39 |         69        0.69       45.77
         41 |         38        0.38       46.15
         43 |         61        0.61       46.76
         45 |         99        0.99       47.75
         47 |         82        0.82       48.57
         49 |         28        0.28       48.85
         51 |         79        0.79       49.64
         53 |         90        0.90       50.54
         55 |         74        0.74       51.28
         57 |         29        0.29       51.57
         59 |        244        2.44       54.01
         61 |         57        0.57       54.58
         63 |         30        0.30       54.88
         65 |        388        3.88       58.76
         67 |        233        2.33       61.09
         68 |          2        0.02       61.11
         69 |         56        0.56       61.67
         71 |        444        4.44       66.11
         73 |        563        5.63       71.74
         75 |         78        0.78       72.52
         77 |        190        1.90       74.42
         79 |         59        0.59       75.01
         81 |        121        1.21       76.22
         83 |        141        1.41       77.63
         85 |        152        1.52       79.15
         87 |         41        0.41       79.56
         89 |        106        1.06       80.62
         90 |         30        0.30       80.92
         91 |         31        0.31       81.23
         93 |         49        0.49       81.72
         95 |        100        1.00       82.72
         97 |        212        2.12       84.84
         99 |        126        1.26       86.10
        101 |         79        0.79       86.89
        103 |         56        0.56       87.45
        105 |         25        0.25       87.70
        107 |        144        1.44       89.14
        109 |         34        0.34       89.48
        110 |          1        0.01       89.49
        111 |         96        0.96       90.45
        113 |         99        0.99       91.44
        115 |        118        1.18       92.62
        117 |         58        0.58       93.20
        119 |        114        1.14       94.34
        121 |         48        0.48       94.82
        122 |         23        0.23       95.05
        123 |         28        0.28       95.33
        125 |        119        1.19       96.52
        127 |         66        0.66       97.18
        129 |         12        0.12       97.30
        130 |          1        0.01       97.31
        131 |         37        0.37       97.68
        133 |         23        0.23       97.91
        135 |         15        0.15       98.06
        137 |          8        0.08       98.14
        139 |         19        0.19       98.33
        141 |         30        0.30       98.63
        143 |         42        0.42       99.05
        145 |         30        0.30       99.35
        147 |          5        0.05       99.40
        149 |         16        0.16       99.56
        150 |          2        0.02       99.58
        170 |         33        0.33       99.91
        201 |          1        0.01       99.92
        240 |          4        0.04       99.96
        290 |          4        0.04      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 18 Apr 2016