A storage container includes a main body and a cover. The main body includes a first recessed portion and an outer edge portion. The first recessed portion has an opening portion and is bounded by a first bottom surface portion and a first peripheral wall portion including a first wall portion. The outer edge portion protrudes further than the first wall portion on an outer periphery side of the storage container with respect to the first wall portion. The first wall portion has a groove portion and at least one first hole portion. The groove portion is formed on a protruding end portion of the first wall portion in a position separated from an edge of the first recessed portion toward the outer edge portion. The at least one hole portion opens onto the protruding end portion, communicates with the groove portion and is separated from the first recessed portion.