Bought my '13 SS new in December 2012. Had 220 on it because they had to bring it from an Atlanta dealership. I just turned over 3K miles (that's about 600 miles a month average) but I doubt I can maintain an average that low. So, yes... your 2011 has pretty low miles on it. You're averaging about 500/month.
2013 1SS/RS Coupe L99, CAI Inc. Air Intake w/ Apex Scoop, VMAX CNC Ported Throttle Body, Vitesse Throttle Controller, Solo Axle-Back Exhaust w/ J-pipes, Apex Catch Can, Husky Splash Guards, Heritage Grille, Oracle Chrome Turn Signal Bulbs, GM Reverse Light Trim Billets, Emblem Pros Retro SS Badges/Custom Retro SS Kickplates/Under-hood Bowtie