The area near Brownwood would be conducive to meeting people in your age group. There's also the Baby Boomer Club.
Buy a map to see all of the villages as this is a big place. Call the sales office and have them send you one for $5.
Don't get hung up on a number as my friends are 15 years younger than I am and I can run circles around them.
You owe it to yourself to come and check it out!
__________________
"It doesn't cost "nuttin", to be nice". 
MOM
I just want to do the right thing! Uncle Joe, (my hero).