Tilquiapan Zapotec is an Otomanguean language spoken in the town of San Miguel Tilquiapan, in the Oaxaca Valley, in the central part of that state, in southern Mexico (see Merrill 2005). There are about 2700 speakers according to the government census (INEGI 2000), though town authorities (p.c. 2004) suggest that about 7000 is a more accurate assessment of the population. The Zapotec language spoken in Tilquiapan is distinct from that of any other town, although nearby Santa Inez Yatzeche has 80–90% intelligibility with Tilquiapan, according to recorded text testing (Weathers 1973, Persons et al. 1985). With respect to sociolinguistics and language attitudes, speakers in Santa Inez and Tilquiapan recognize the close relationship, though people from each town tend to say that those from the other ‘talk funny’.