The development of the indicator of sown areas is significant in modern conditions of agricultural development, especially in those regions that have poor climatic conditions. The use and expansion of sown areas, which is one of the factors of food security not only in the region, but also in the country as a whole, is considered for the sustainable development of territories with a predominance of cold climate. The sown area, being the main production fund of the agrarian economy, contributes to the development of the entire agro-industrial complex of the country, providing crop products not only for the food industry, but also livestock, creating additional opportunities for agricultural production in the region. The article identifies trends, which is an important step for predicting the development of the agricultural sector and food security of the country. The use of trend analysis is an important tool for determining changes in crop development trends. The indicators of the Republics of Karelia and Komi, the Nenets Autonomous District, the Arkhangelsk and Murmansk regions are investigated. The sown areas of regions of different sizes were studied not only by absolute growth indicators, but also relative and average indicators were calculated to improve coverage of the state of the areas not only in the previous study period from 1990 to 2019, but also in the medium-term development perspective for 2020-2025. Polynomial and exponential development models were used for the study, which indicates the non-linearity of the change in the fundamental means of agricultural development, which indicates a significant non-uniformity of the indicator.