Most studies of sound change in the United States have focused on the social strata of urban societies. In the American cornbelt, however, the most important social distinctions are horizontal rather than vertical. A fundamental ethnic division dating back to original settlement of the area opposes town and countryside dwellers. A study of fifty-one speakers in a rural area of Illinois shows fronting and raising of (aw) to be considerably more advanced among countryside dwellers than among town residents. Furthermore, the countryside population underwent a profound social and economic change during the past half century as large numbers of subsistence farmers abandoned the land and rural life altogether, leaving behind a smaller number of farmers whose larger operations meant that the economic and social status of the average farmer considerably improved. An examination of town and countryside age groups from the data base shows that an increase in the fronting and raising of (aw) took place primarily in a single generation most affected by the change in the farm population. At least temporarily, fronted and raised (aw), despite an overt nonstandard status documented in more than a century of speech and language textbooks, suddenly acquired a new prestige – spreading even to town populations – along with a reassertion of rural values and rural life. (Sound change, social structure, rural society, American English, sociolinguistics, dialectology)