Trieu Phong district lies on the east - south part of Quang Tri, with geographical coordinates as 16048' – 16054' north latitude; 107012'-1080,18' east longitude, having many critical traffic routes passing through, that are : National road 1A; Provincial Highway 580 connecting Highway 1A to Cua Viet ports; provincial highway 581 from 1A national way passes through the town by two south communes ; then Hai Lang and Thua Thien Hue. Natural area is of 353.04 km2, including 18 communes and one town. The district has the population of 107 817 people (as measured last time on 31/12/2009), accounting for approximately 16.8% of the population of the whole Quang Tri province. Ai Tu town is considered as political, economic and cultural center of the district community. Trieu Phong is 7 km from Dong Ha City to the south , about 6 km from Quang Tri Town 6 km to the north. Trieu Phong terrain includes mainly coastal plain, with a little low hilly area ent Trieu Thuong and Trieu Ai on the west, the east terrain is mainly white sand dunes. Trieu Phong natural area is of 354.92 km². The last part of Thach Han river is flowing to Cua Viet seaport, located in the district, with the geographic location as :
- Dong Ha city and Gio Linh on the north border
- The south is reaching Hai Lang district and Quang Tri town
- West borders are Cam Lo district and Đakrông
- The south part is neighboring with the south china sea, with a coastline of 18 km
Trieu Phong terrain is inclined from west to east, divided into 3 specific areas: hilly, sandy plains and coastal areas. Hilly area is accounting for 51.08% hilly areas of natural land including Trieu Thuong Commune, Trieu Ai and part of Trieu Giang. This land was favourable for the development of industrial crops, timber trees combined with farm plants, food crops and farm economy development.
Over the two wars for great the nation, this land has witnessed many events, where converged nostalgia and pity to the national blood bone. The beloved Trieu Phong land has left countless miracles in the name of land and village in years of war and peaceful renovation period.