The spatial dynamics of the Canadian economy is examined for 71 industries, using a geography based on size and location criteria. Via a corrélation analysis of location quotients, relative economic structures are compared over time. In relative terms, the types of industries found in large cities or central (as opposed to peripheral) locations have changed on little over time. Rural-urban contrasts have lessened, but not those founded on distance, suggesting fairly stable concentric landscapes in which industry specialisation is largely determined by distance from a central point.