Abstract: An interlocking container and lid assembly and a partially formed container therefor is disclosed, wherein the container has a peripheral sidewall including an upper peripheral edge portion having at least two opposed interlocking areas. Openings are formed in the sidewall interlocking areas. Folded-back flaps are connected to the upper peripheral edge portion. The flaps have an upper wall portion covering the openings and a lower wall portion attached to the sidewall. The upper wall portion is spaced from the sidewall to form a hollow space behind the openings. The lid has a top member and a peripheral flange with projections formed therein to fit into the container sidewall openings and lock the lid onto the container.