San Antonio, TX, offers an opportunity to examine Mexican American homicide rates in geographical & historical context. Homicide mortality data on all deaths in Bexar County, 1935-1984, were coded for demographic characteristics & causes of death, yielding approximately 4,500 homicide victims. Mexican American male homicide rates were consistently intermediate between those of Anglo & black males, & homicide in the Hispanic population was the driving component in San Antonio's male homicide rate, being 1.5-3 times higher than the national rate. In all ethnic groups, firearms accounted for the most homicide deaths, with significant increases occurring after 1960. The spatial analysis indicates high & stable concentrations of homicide in poorer Hispanic & black areas of the city over time. 1 Table, 5 Figures, 34 References. Adapted from the source document.