· In January 2021, all CPI cities in North Sumatra had inflation, namely Sibolga by 0.74 percent; Pematangsiantar by 1.13 percent; Medan by 0.38 percent; Padangsidimpuan by 0.38 percent; and Gunung Sitoli by 1.08 percent. Thus, the combined 5 CPI cities in North Sumatra in January 2021 inflation of 0.45 percent.
· In January 2021, Medan recorded an inflation of 0.38 percent or an increase in the Consumer Price Index (CPI) from 104.15 in December 2020 to 104.55 in January 2021. Inflation occurred due to an increase in prices indicated, namely the food, beverage group and tobacco 1.14 percent; clothing and footwear group by 0.03 percent; equipment, tools and household routine maintenance group of 0.21 percent; the health group of 0.33 percent; and the food and beverage / restaurant supply group by 0.56 percent. The expenditure group that experienced a decrease in index were the transportation group by 0.07 percent; and personal care and other services group by 0.64 percent. The other four groups that did not experience changes in index, namely the housing, water, electricity, and household fuels group; information, communication and financial services group; recreational, sports, and cultural groups; and education groups.
· The main commodities contributing to inflation during January 2021 in Medan include tomatoes, dencis fish, tuna / ambu-ambu, anchovies, chilies, mackerel / mackerel, purebred chicken, ketupat / lontong sayur. Of the 24 CPI cities on the island of Sumatra, all cities recorded inflation. The highest inflation was in Pangkal Pinang at 1.17 percent with the CPI at 104.65 and the lowest in Padang at 0.10 percent with the CPI at 105.49.