Nghe An is no longer the province with the largest area after the whole country merged provinces.

However, after the merger of provinces and cities, Nghe An's ranking will change.

According to the Project on rearranging and reorganizing provincial-level administrative units and building a two-level local government model, approved under Decision No. 759/QD-TTg dated April 14, 2025 of the Prime Minister, there are a total of 52 provincial-level administrative units to be rearranged, including 4 cities: Hai Phong, City. Ho Chi Minh City, Da Nang, Can Tho, and 48 provinces: Ha Nam, Hung Yen, Vinh Phuc, Bac Ninh, Thai Binh, Hai Duong, Nam Dinh, Ninh Binh, Bac Kan, Thai Nguyen, Phu Tho, Bac Giang, Hoa Binh, Tuyen Quang, Lao Cai, Yen Bai, Ha Giang, Ninh Thuan, Quang Tri, Phu Yen, Quang Binh, Quang Ngai, Khanh Hoa, Dak Nong, Tay Ninh, Binh Duong, Binh Thuan, Binh Phuoc, Ba Ria - Vung Tau, Ben Tre, Bac Lieu, Vinh Long, Hau Giang, Tra Vinh, Tien Giang, Soc Trang, Dong Thap, An Giang, Long An, Ca Mau, Quang Nam, Binh Dinh, Dak Lak, Dong Nai, Gia Lai, Kon Tum, Lam Dong, and Kien Giang.

Nghe An is one of 11 provincial-level administrative units that did not implement the arrangement, including Hanoi and Hue cities and the provinces of Lai Chau, Dien Bien, Son La, Cao Bang, Lang Son, Quang Ninh, Thanh Hoa, Nghe An and Ha Tinh.

Based on the area and population data of 52 provinces and cities subject to rearrangement announced in the Government's Project and the statistical data of 11 provinces and cities not subject to rearrangement from the results of the mid-term population and housing census (at 0:00 on April 1, 2024) of the General Statistics Office (now the General Statistics Office), after the whole country completed the province merger, Nghe An ranked 4th in area and 10th in population out of 34 provinces and cities.