Objectives. The primary objective of this article is to assess the respiratory health impacts of a flood disaster on Hispanic people residing in the United States, with a focus on intra-ethnic disparities related to age, sex, socioeconomic status, mold exposure, family conflict, English-language proficiency, and a lack of US citizenship. Methods. Data were collected in 2010 after a flood disaster (2006) in El Paso County (Texas), which has a Hispanic majority population. A mail-out population-based survey was used retrospectively to assess respiratory health impacts for 363 people residing in 176 self-identified Hispanic households impacted by the flood; logistic regression was utilized to assess intra-ethnic health disparities in flood impacts. Results. About 41% of individuals experienced one or more post-flood respiratory health problem. Lower income (OR ¼ 0.532, p ¼ .002), mold exposure (OR ¼ 2.267, p < .001), increased family conflict (OR ¼ 1.452, p ¼ .025), English-language proficiency (OR ¼ 4.023, p < .001) and a lack of US citizenship (OR ¼ 13.111, p ¼ .013) were significantly associated with higher odds of respiratory health problems in the regression model. Conclusion. Statistical findings provide evidence of intra-ethnic disparities in post-flood respiratory health status. Specifically within this Hispanic sample, individuals with lower household incomes, whose homes were covered by larger surface areas of mold, and whose families were characterized by increased tension experienced higher odds of post-flood respiratory health problems. Interestingly, greater Englishlanguage proficiency and lacking US citizenship were also risk factors. Given that this is one of the first studies of intra-Hispanic disparities in health following a US-based disaster, the findings underscore the importance of considering diversity within the US Hispanic population when studying environmental and post-disaster respiratory health. J Asthma Downloaded from informahealthcare.com by University of British Columbia on 11/18/14 For personal use only. d Respiratory health problems include: asthma; more coughing/wheezing than before the 2006 floods; more coughing in sleep than before the 2006 floods; more asthma attacks than before the 2006 floods; more missed work/school because of coughing/ wheezing; lung or airway irritations or inflammation. e English proficiency is the sum of two variables: (a) English speaking proficiency and (b) English writing proficiency. 466 A. M. JIMENEZ ET AL. J Asthma Downloaded from informahealthcare.com by University of British Columbia on 11/18/14 For personal use only. 470 A. M. JIMENEZ ET AL. J Asthma Downloaded from informahealthcare.com by University of British Columbia on 11/18/14For personal use only.