Geography disparities exist in obesity and obesity-related conditions. The study aims to examine the geographic differences in obesity prevalence and its risk factors among Asian-American adults in California using data from the 2013-14 California Health Interview Survey (CHIS). Obesity was defined according to the World Health Organization Asian body mass index cut points in Asian groups.

Results suggest that 66.5 percent of Asians lived in urban areas. Among Asian adults, obesity prevalence was highest in Filipinos and lowest in Koreans, 33.8 percent vs. 12.8 percent. Compared to rural Vietnamese, obesity prevalence was higher for urban Vietnamese, 8.3 percent vs. 20.2 percent. Weighted multiple logistic regression analyses showed that being 45–64 years (vs. 65 years or above), being Japanese, Filipino, or other Asians (vs. Chinese) were associated with a higher odds of obesity among urban residents; whereas being 18–64 years (vs. 65 years or older), being male, having high school education (vs. having graduate education) were associated with a higher odds of obesity among rural residents. Being Vietnamese (vs. Chinese) was associated with 64 percent decreased odds of obesity only among rural residents.