Aim: To study the levels of happiness perception in the elderly in different regions, and determine the reasons affecting it. Methods: The Thai Happiness Indicators: THI-15; 2001 were used in this study of 306 participants (Ն60 years) in different regions: rural, suburban, and urban. The elderly were chosen by chance from those belonging to Thai senior clubs in opportunistic random. Results:The elderly perceived their happiness as good, fair, and poor, respectively, 12.4%, 37.9%, and 49.7%. There was a difference in happiness perception among the regions: poor happiness perception (64.5%, 61.2%, and 22.8% in rural, suburban, and urban areas, respectively) (P < 0.001). We also verified that there was a difference in poor happiness perception between males (57.9%) and females (42.2%) (P < 0.01). There were differences in the happiness perception among people with different levels of education (c 2 (4, N = 306) = 14.15, P = 0.007). There was also a difference between happiness perceptions as related to occupation: the results showed elderly who were not working had a better score of happiness perception than the elderly who had to work. Conclusions: Although we cannot generalize from the results the happiness of all Thai elderly, the present study found that formal education, geographical areas, and gender can influence happiness. Health-care providers should be concerned about and provide the proper intervention and/or activities in order to alleviate the mental health problems among the elderly in communities, especially the elderly who are identified with poor happiness.