The curb weight of a 2011 Chevrolet Camaro varies depending on the trim level and options. There's no single answer. You'll need to specify the trim (e.g., LS, LT, SS, RS, ZL1) to get a more accurate weight. Even then, slight variations are possible due to options.
To find the exact curb weight for your specific 2011 Camaro, you should consult the owner's manual or a reliable automotive specifications website.