All of mine (including the ones that live with my parents still) are under 7 currently:
Nero - 1
Katina - 1.5
Hoshi - 2
Tailpipe - 3
Caliper - 5 (has chronic UTI's and is on prescription food for life)
Chassis - 6 (has already been through sarcoma of the leg)
My family never had a cat live past 11
Our previous kitties were 10 (cancer) and 11 (kidney failure) when they passed on. Sparky was 5 when she had a blood clot paralyze her and cause her extreme pain and was put down. Hopefully the current kitties will all live much longer lives!
Rob's kitty Tigger was 15 when she left for the bridge. If she hadn't developed hyperthyroidism and fluid surrounding her lungs, I believe she would have lived MUCH longer.
My grandmother has had quite a few 17+ cats though. Her current kitty, Brini, is 6. My dad had a cat that was at least 25 when he was younger.