Providing links and resources to meet others
CYAN is a diocesan wide network for young adults ages 20-35. Most of their current connections and announcements happen through the CYAN Facebook page.
The National Catholic Young Adult Ministry Association is a good place to start. Here is their link. Every two years they host a big leadership conference which has been quite successful.
Charis (pronounced Ka-ris) Ministries is a Jesuit ministry for those in their 20s-30s. On this site you can find group retreat information, newsletters, & a 3-minute retreat.