Rube

Noun

 * 1) A person of rural heritage; a yokel.
 * 2)  An uninformed, unsophisticated, or unintelligent person.

Thesaurus
babe, backwoodsman, boor, boorish, bucolic, bumpkin, butterfingers, child, child of nature, churlish, clod, cloddish, clodhopper, clodhopping, clown, clownish, clumsy, countrified, country bumpkin, country-born, country-bred, dove, dub, duffer, dupe, farmer, farmerish, foozler, foul-up, from the sticks, fumble-fist, gawk, gawky, goof, goofball, goofer, hayseed, hick, hicky, hillbilly, hobnailed, infant, ingenue, innocent, inurbane, lamb, looby, lout, loutish, lubber, lummox, lump, lumpen, lumpish, mere child, muff, muffer, noble savage, oaf, provincial, redneck, rustic, simple soul, slob, stumblebum, stumblebunny, uncouth, uncultivated, uncultured, unpolished, unrefined, unsophisticate, up-country, yokel, yokelish