Frequencies for first 10,000 rows of state variable in zipcode dataset :

    Federal |
Information |
 Processing |
  Standards |
     (FIPS) |
 state code |      Freq.     Percent        Cum.
------------+-----------------------------------
            |          8        0.08        0.08
         09 |        435        4.35        4.43
         10 |         98        0.98        5.41
         11 |        275        2.75        8.16
         23 |        505        5.05       13.21
         24 |        618        6.18       19.39
         25 |        745        7.45       26.84
         33 |        278        2.78       29.62
         34 |        734        7.34       36.96
         36 |      2,238       22.38       59.34
         42 |      2,224       22.24       81.58
         44 |         91        0.91       82.49
         50 |        308        3.08       85.57
         51 |      1,251       12.51       98.08
         72 |        176        1.76       99.84
         78 |         16        0.16      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 4 Jan 2016
 tail -n+3 /homes/data/zip/sas/2003/desc/zipcode/byvar/tab/state.log | egrep -v