Frequencies for first 10,000 rows of placefip variable in natl2002 dataset :

      Place |
  (City) of |
  Residence |      Freq.     Percent        Cum.
------------+-----------------------------------
      01000 |          2        0.02        0.02
      03000 |      4,130       41.30       41.32
      07000 |         20        0.20       41.52
      37000 |          3        0.03       41.55
      50000 |          2        0.02       41.57
      51000 |          9        0.09       41.66
      99999 |      5,834       58.34      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 22 Dec 2015