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The objective of this study was to explore demographic and economic characteristics associated with household food security of 2,784 low-income households with pre-school aged children receiving food supplements from the Colombian Plan for Improving Food and Nutrition in Antioquia -MANA (Mejoramiento Alimentario y Nutricional de Antioquia) in the Department of Antioquia, Colombia. Included in the study was a 12-item household food security survey was collected from a cross-sectional, stratified random sample of MANA participants in which households were characterized as food secure, mildly food insecure, moderately food insecure, and severely food insecure. It was hypothesized that household food security status would be strongly associated with demographic characteristics, food expenditure variables, and food supplement consumption by children in MANA. Food insecure households were characterized by more members, older parents, and lower income (p<0.0001). Rural residence and female head of households had higher rates of food insecurity (p<0.01). Food insecure households had the lowest monthly expenditures food (p<0.0001). Severely food insecure households saved the highest percentage of per capita food expenditure from consuming MANA supplements (p<0.0001), similarly, MANA food supplement intakes were greatest in households reporting the most food insecurity (p<0.001). The results of this study are important to describe characteristics of the population benefiting from the MANA nutrition intervention by their unique level of household food security status.