This research examines the impact of ethnic concentration and community socioeconomic status (SES) on elderly health in ethnically diverse communities in Xinjiang in northwest China. Effects of the concentration of two major ethnic populations are compared: the Han, which is the dominant ethnic group in China, and the Uyghur, the largest Muslim group in Xinjiang. Net of socioeconomic status, we find that population densities of the ethnic groups have a significant impact on our aggregate-level indicators of elderly health. Han density predicts good health, while Uyghur density predicts poor health. However, we do not find that SES indicators are independent predictors of community elder health. These findings suggest that rapidly developing economies, like those in China, do not necessarily provide the attention to health care that would result in improved quality of life and health status for the population.