Price indices for thirteen Canadian cities for 1900 to 1950 demonstrate large regional differences in cost of living until 1914. After 1914 regional price levels converged. Before the war, western Canadian cities had the highest cost of living. After 1920 cities in Ontario had the highest cost of living. Accounting for these trends in regional costs of living reveals that regional real wage and real income structures have been present and stable since at least 1901. Thus, regional wage and income disparities are long-standing and persistent features of the Canadian economy.