Haiphong is the third-largest city in Vietnam and is the principal port city of the Red River Delta. The municipality has an area of 1,526.52 km², c…Haiphong is the third-largest city in Vietnam and is the principal port city of the Red River Delta. The municipality has an area of 1,526.52 km², consisting of 8 urban districts, 6 rural districts and 1 municipal city. Two of the rural districts cover islands in the South China Sea: Bạch Long Vĩ and Cát Hải. It has a population of 2,130,898 in 2023. The city's economy has strength in manufacturing, as evident by large industrial parks and numerous smaller traditional handicraft villages. Historically, Haiphong is the first place in Vietnam and Mainland Southeast Asia to get electricity.