Frequencies for first 10,000 rows of state variable in zipcode2006 dataset :

  The State |
 associated |
   with the |
   ZIP code |      Freq.     Percent        Cum.
------------+-----------------------------------
         ma |      4,613       46.13       46.13
         me |      2,853       28.53       74.66
         nh |      1,904       19.04       93.70
         ri |        630        6.30      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 20 Jun 2017