In the present data, we provide the details of the cross-sectional study, from the Washington Heights-Inwood Community Aging Project (WHICAP) that examined the association between Apolipoprotein E (APOE-ε4) and snoring/sleep apnea. A total of 1944 non-demented older adults constituted our sample. Sleep dysfunction was measured using sleep categories derived from the Medical Outcomes Study Sleep Scale. Stratified analyses were conducted in order to examine the association between APOE-ε4 and sleep variables by ethnic group. For further analyses and enhanced discussion, see ". Examining the association between Apolipoprotein E (APOE) and self-reported sleep disturbances in non-demented older adults" by Tsapanou et al. (2015) [1].