Prole

from WordNet (r) 3.0 (2006)

prole
    n 1: a member of the working class (not necessarily employed);
         "workers of the world--unite!" [syn: {proletarian},
         {prole}, {worker}]

from U.S. Gazetteer (1990)

Prole, IA
  Zip code(s): 50229