Historical literacy in Spain is characterised by enormous regional disparities and important differences by sex. This paper addresses these issues, focusing initially on the 1887 census returns and also making use of local empirical data and of in-depth interviews of elderly informants. The goal is to propose an interpretation of historical patterns of literacy based, to a large extent, on the existence of important differences in the perceived value of literacy and education, very high in some regions and very low in others. The author argues that these cleavages go beyond the importance of economic structures, have deep historical roots and continue to be present in contemporary Spain despite the substantial growth in educational attainment taking place during this past century.