WordNet sense 1 (characteristic of rural life):

countrified, countryfied

WordNet sense 2 (used of idealized country life):

bucolic, pastoral, Arcadian

WordNet sense 3 (characteristic of the fields or country):

agrestic

WordNet sense 4 (living in or characteristic of farming or country life):

rural

WordNet sense 5 (awkwardly simple and provincial):

hick, unsophisticated, bumpkinly

WordNet sense 6 (characteristic of the provinces or their people):

provincial