K.S.
Hi K.,
you can find all different kinds of groups for socializing and also Moms and kids playgroups on www.meetup.com.
I belong to this one: http://moms.meetup.com/1118/
it's called Forever Fun Portland Mom and Dad Group and families are great, fun and friendly, doing lots of activities for kids and parents. Check it out just to get an idea. It's not exactly in your neighborhood but you can find groups on the meetup website closer to your home. Welcome to Portland !