This study was aimed at reducing the thickness of reinforced concrete (RC) silo wall to achieve economy and increase the buckling capacity of silo by using different types of concrete. The buckling design of RC silos subjected to wind pressure is demonstrated in accordance with the Indian code (IS: 4995, IS456, IS875) and proposed combinational load case EW (empty silo + wind) and FW (full silo + wind). The four different models are modeled and buckling analysis is carried out by using SAP 2000 software based on different types of concrete. For all the silo model’s slenderness ratio is kept same. It is observed that the base shear, displacement, buckling factor and Eigen values are directly proportional and natural period is inversely proportional with the different types of concrete properties such as, elastic modulus and characteristic strength. The base shear, displacement and buckling factor is reduced for FW load case as compared to EW load case. The displacement and natural period are within the permissible limit. It was found that the economical cross section of the silos can be achieved by using different types of concrete, this leads to the reduction of self-weight of structure and also to achieve economy.