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

  two-digit |
     number |
(fips code) |
        for |
state/terri |
       tory |      Freq.     Percent        Cum.
------------+-----------------------------------
          9 |        433        4.33        4.33
         10 |         96        0.96        5.29
         11 |        278        2.78        8.07
         23 |        486        4.86       12.93
         24 |        605        6.05       18.98
         25 |        690        6.90       25.88
         33 |        284        2.84       28.72
         34 |        723        7.23       35.95
         36 |      2,158       21.58       57.53
         42 |      2,185       21.85       79.38
         44 |         90        0.90       80.28
         50 |        309        3.09       83.37
         51 |      1,216       12.16       95.53
         54 |        255        2.55       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/2013/desc/zipcode/byvar/tab/state.log | egrep -v