District 1 was the central urban district of Ho Chi Minh City, the largest city in Vietnam. With a total area of 7.7211 km2 (2.9811 sq mi) the district had a population of 204,899 people in 2010. It is the historical birthplace of the city, where the Citadel of Gia Định is first built. The district was divided into 10 small subsets which were called wards (phường) prior to the 2025 administrative reforms.