S.M.
The best place to look is Meetup.com. I have been involved in several groups through Meetup.com. I am currently in SAHM of the Va. Peninsula. You have a chance to meet and greet with most of the group and see if it's a match. (We have both morning and afternoon, free and paid events, Mom's night out Couple's night out. There is even a regular "Lonely Hearts" dinner for moms with husbands that are deployed so the kids and moms can all have a "family" dinner.) Hope you and your boys find a great Playgroup.
S.