Dental health is often neglected in the older persons, and dental conditions associated with aging are complex, adversely affecting the quality of life. The present study was undertaken to estimate the prevalence of dental caries and periodontal diseases among older persons from Delhi, India, and to study their association with selected socio-behavioral risk factors. We conducted a community-based cross sectional study among persons aged > or = 60 years from Delhi during 2009-2010. A questionnaire was used to interview elderly regarding dental health. The World Health Organization (WHO) oral health assessment form was used for examining the study participants. A total of 448 participants were examined and included in the study. Of the dentate, 47.1% had active dental caries. The mean decayed, missing and filled teeth (DMFT) score for the study population was 14.4. The prevalence of gingival bleeding, periodontal pockets and loss of attachment was 96.6, 89.1, and 80.3%, respectively. The prevalence of tobacco use was 47.9%. Age, frequency of teeth cleaning, and method used for teeth cleaning were statistically associated with the DMFT score. The prevalence of dental caries and periodontal disease was high in the study population, and warrants intervention.