Previous research has yielded mixed results with respect to the relationship between religiosity and adaptation in older adults. Most studies show that religiosity is stable over the life span, but that religiosity may or may not be related to such factors as physical and mental health, life satisfaction, and coping. This study adds to earlier investigations by including centenarians among the sample. The preliminary results of this research project support earlier findings that religiosity does not change significantly as one ages, although there is a trend in the results that suggests otherwise. The results also indicate a significant relationship between religiosity and physical health but no significant relationship between religiosity and mental health and life satisfaction. Religiosity and coping are strongly related, and there is the suggestion that religious coping mechanisms might be more important in the oldest-old.