As to the geographic environment of this district, hilly land accounts for 80% and plain land 20%. With an area of 56.2659km2, 42.78% of the territory of Keelung City, this district is the biggest administrative region in the city. It is surrounded by green mountains and beautiful landscapes, and filled with rurality. Keelung River runs from the northeast to the southwest, and meets Shicuokeng, Caolan, Maling, and Yourui Rivers. Mountains prevail in the entire district, and there is some plain area in the Bei-Wu-Du zone in the southwest corner only.
The district covers 20 miles, 412 villages (Changan Village newly set in January 2006), and 18,759 families. The population of the district is 55,230, ranking the third in the city (the total population of the city is 391,553).