North America metropolitan area by population in North America: Greater Mexico City. Canada also breaks into the top ten largest metropolitan areas with the Toronto metropolitan area having six million people. The proximity of cities to each other on the Canada–United States border and Mexico–United States border has led to the rise of international metropolitan areas. These urban agglomerations are observed at their largest and most productive in Detroit–Windsor and San Diego–Tijuana and experience large commercial, economic, and cultural activity. The metropolitan areas are responsible for millions of dollars of trade dependent on international freight. In Detroit-Windsor the Border Transportation Partnership study
Sorsogon City to the north east, and Pacific Ocean in the east. Sorsogon City is southeast of Manila and south of Legazpi City. The 2015 Census puts the city's population at 168,110 with an annual growth rate of 0.84%. Sorsogon City ranked as the 3rd largest city in terms of population in the Bicol region. The only city in the province of Sorsogon, Sorsogon City is the largest in terms of land area in the Bicol region. The Pan-Philippine Highway which runs From Northwest to Southeast through the city, connects Sorsogon City to the municipalities of Castilla, Pilar, in the Northwest towards