124 chars, using that set :) 
sub state {
  pop=~/^(A[KLRZ]|C[AOT]|D[CE]|FL|GA|HI|I[ADLN]|K[STY]|LA|M[ADEINOST]|
+N[CDEHJMVY]|O[HKR]|PA|RI|S[CD]|T[NX]|UT|V[AT]|W[AIVY])$/
}

[download]
   MeowChow                                   
               s aamecha.s a..a\u$&owag.print

In reply to Re: Re (tilly) 2: Golf challange: match U.S. State names by MeowChow
in thread Golf challange: match U.S. State names by John M. Dlugosz

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