The Collaborative International Dictionary of English v.0.48:

Statist \Sta"tist\ (-t[i^]st), n. [From State.]
   1. A statesman; a politician; one skilled in government.
      [Obs.]
      [1913 Webster]

            Statists indeed,
            And lovers of their country.          --Milton.
      [1913 Webster]

   2. A statistician. --Fawcett.
      [1913 Webster] Statistic