MN 274 was authorized on July 1, 1949. The highway's original northern terminus was at
MN 67 until MN 23 was rerouted between Hanley Falls and Granite Falls circa 1980. MN 274 became part of MN 67 north of CSAH 2, and the section south of CSAH 2 was turned back on September 27, 2022. The route was legally defined as Route 274 in the Minnesota Statutes. ==Major intersections==