In case you're looking for a playgroup...

WinsyWade

I started one in the Southwest suburbs few years back.  Its a great group, smallish.  We have no attendance requirements and charge dues of $12/year (that pay for the meetup site and two parties per year). 

If you're interested, please send me an email (listed on our main page). 

 https://www.meetup.com/SWMOMS/

Posting this because I noticed quite a few moms from the SW burbs in the starred post below.