Shafer is a city in Chisago County, Minnesota, United States. The population was 1,045 at the 2010 census.
U.S. Route 8 serves as a main arterial route for the community.
According to the United States Census Bureau, the city has a total area of 0.6 square miles (1.6 km²), all of it land. The Shafer watertower is the highest vertical point in the county.