Methods and an apparatuses are provided for transmitting and receiving signaling information in a digital broadcasting system. A method includes encoding first signaling information for a physical layer to generate a first coded block; encoding second signaling information to generate a second coded block; and transmitting a frame including the first coded block, the second coded block, and at least one physical layer pipe (PLP) data. The first signaling information has a fixed number of bits. The second signaling information has a variable number of bits. The first signaling information comprises information indicating a forward error correction (FEC) type used for the second signaling information. The second signaling information comprises information indicating a modulation scheme of a related PLP, and information indicating a code rate of the related PLP.