The move aims to meet the local urbanization process and develop Sam Son into a national tourist destination.
It also looks to create a development triangle area, encompassing Thanh Hoa city, Sam Son city, and Nghi Son Economic Zone, which will lead to important momentum for economic growth in the province and the north central region generally.
The province is now home to two cities, one town, 24 districts, 34 wards, 28 townships, and 573 communes.
Sam Son city will cover 45 square kilometers with a population of 151,000 and 11 communal administrative units.
NA deputies suggested the province devise measures to ensure defense security and social order and safety as well as pay attention to eco-environmental protection, cultural preservation and changing jobs for locals.