Frequencies for first 10,000 rows of placefip variable in natl2001 dataset :

      Place |
  (City) of |
  Residence |      Freq.     Percent        Cum.
------------+-----------------------------------
      00000 |          1        0.01        0.01
      07000 |        749        7.49        7.50
      19000 |          1        0.01        7.51
      37000 |        317        3.17       10.68
      48000 |          1        0.01       10.69
      50000 |        557        5.57       16.26
      51000 |        505        5.05       21.31
      99999 |      7,869       78.69      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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