Are variations in international prices of corn transmitted to local markets in Mexico? How homogeneous is the transmission across the different regions of the country? I estimate to what extent changes in international prices of maize are transmitted to the different Mexican sub-national regions. The price of white maize in the Mexican regions is cointegrated with the international price of yellow maize but not with the international price of the Argentina Up River maize. The north has the largest price transmission elasticity among the Mexican regions, although all of the regions exhibit similar elasticities. Changes in the international prices have permanent effects on the average of local prices in Mexico.