Frequencies for first 10,000 rows of placefip variable in natl1998 dataset :

      Place |
  (City) of |
  Resdience |
     (FIPS) |      Freq.     Percent        Cum.
------------+-----------------------------------
      07000 |        726        7.26        7.26
      21000 |          1        0.01        7.27
      36000 |          1        0.01        7.28
      37000 |        379        3.79       11.07
      50000 |        606        6.06       17.13
      51000 |        556        5.56       22.69
      67000 |          1        0.01       22.70
      70600 |          1        0.01       22.71
      99999 |      7,729       77.29      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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