Area: 3,311.6 sq. km. Population: 1,310.7 thousand habitants (2015). Capital: Soc Trang City. Town: Vinh Chau, Nga Nam. Districts: Ke Sach, My Tu, My Xuyen, Thanh Tri, Long Phu, Cu Lao Dung, Chau Thanh. Ethnic groups: Viet (Kinh), Khmer, Cham, Hoa...

Area: 14,174.4 sq. km. Population: 1,182.4 thousand habitants (2015). Capital: Son La City. Districts: Quynh Nhai, Muong La, Thuan Chau, Phu Yen, Bac Yen, Mai Son, Song Ma, Yen Chau, Moc Chau, Sop Cop, Van Ho. Ethnic groups: Dao, Thai, Viet (Kinh), H'Mong, Muong.

Area: 4,032.6 sq. km. Population: 1,111.5 thousand habitants (2015). Capital: Tay Ninh City. Districts: Tan Bien, Tan Chau, Duong Minh Chau, Chau Thanh, Hoa Thanh, Ben Cau, Go Dau, Trang Bang. Ethnic groups: Viet (Kinh), Khmer, Cham, Hoa.

Area: 1,570.8 sq. km. Population: 1,789.2 thousand habitants (2015). Capital: Thai Binh City. Districts: Hung Ha, Quynh Phu, Thai Thuy, Dong Hung, Vu Thu, Kien Xuong, Tien Hai. Ethnic groups: Viet (Kinh), Thai, Tay, Ra Glai.

Area: 3,533.2 sq. km. Population: 1,190.6 thousand habitants (2015). Capital: Thai Nguyen City. Administrative divisions: - City: Song Cong. - Town: Pho Yen. - Districts: Dinh Hoa, Dai Tu, Vo Nhai, Dong Hy, Phu Luong, Phu Binh. Ethnic groups: Viet (Kinh), Tay, Nung, San Diu...

Area: 11,129.5 sq.km. Population: 3,514.2 thousand habitants (2015). Capital: Thanh Hoa City. Administrative divisions: - City: Sam Son. - Towns: Bim Son. - Districts: Muong Lat, Quan Hoa, Quan Son, Ba Thuoc, Cam Thuy, Lang Chanh, Thach Thanh, Ngoc Lac, Thuong Xuan, Nhu Xuan, Nhu Thanh, Vinh Loc, Ha Trung, Nga Son, Yen Dinh, Tho Xuan, Hau Loc, Thieu Hoa, Hoang Hoa, Dong Son, Trieu Son, Quang Xuong, Nong Cong, Tinh Gia. Ethnic groups: Viet (Kinh), Muong, Thai, H'Mong, Tho...

Area: 5,033.2 sq. km. Population: 1,140.7 thousand habitants (2015). Capital: Hue City. Administrative divisions: - Town: Huong Thuy, Huong Tra. - Districts: Phong Dien, Quang Dien, Phu Vang, Phu Loc, Nam Dong, A Luoi. Ethnic groups: Viet (Kinh), Ta Oi, Co Tu, Bru Van Kieu, Hoa.

Area: 2,509.3 sq. km Population: 1,728.7 thousand habitants (2015). Capital: My Tho City. Administrative divisions: - Town: Go Cong, Cai Lay. - Districts: Cai Be, Cai Lay, Chau Thanh, Cho Gao, Go Cong Tay, Go Cong Dong, Tan Phuoc, Tan Phu Dong. Ethnic groups: Viet (Kinh), Hoa, Khmer, Tay.

Area: 2,341.2 sq. km. Population:1,034.6 thousand habitants (2015). Capital: Tra Vinh City. Administrative divisions: - Towns: Duyen Hai. - Districts: Cang Long, Cau Ke, Tieu Can, Chau Thanh, Tra Cu, Cau Ngang, Duyen Hai. Ethnic groups: Viet (Kinh), Khmer, Tay, Hoa...

Area: 5,867.3 sq. km. Population: 760.3 thousand habitants (2015). Capital: Tuyen Quang City. Districts: Na Hang, Chiem Hoa, Ham Yen, Yen Son, Son Duong, Lam Binh. Ethnic groups: Viet (Kinh),Tay, Dao, San Chay...