The Collaborative International Dictionary of English v.0.48:

Parochialism \Pa*ro"chi*al*ism\, n.
   The quality or state of being parochial in form or nature; a
   system of management peculiar to parishes.
   [1913 Webster]

WordNet (r) 3.0 (2006):

parochialism
    n 1: a limitation of views or interests like that defined by a
         local parish

Moby Thesaurus II by Grady Ward, 1.0:

57 Moby Thesaurus words for "parochialism":
   Jim Crow, alien, apartheid, authoritarianism, bigotry, blind side,
   blind spot, blinders, closed mind, color bar, cramped ideas,
   division, ethnocentrism, exclusiveness, fanaticism, foreigner,
   hideboundness, illiberality, insularism, insularity, insulation,
   isolation, know-nothingism, little-mindedness, littleness,
   mean mind, meanness, narrow sympathies, narrow views,
   narrow-mindedness, narrowness, nearsightedness, odium theologicum,
   out-group, outcast, outsider, persona non grata, pettiness,
   petty mind, provincialism, purblindness, quarantine, race hatred,
   racial segregation, seclusion, segregation, separation,
   shortsightedness, shut mind, smallness, snobbishness,
   straitlacedness, stranger, stuffiness, tightness, uncatholicity,
   xenophobia