Have You heard of MOPS - Mother's of Preschooler's.
The group I go to is in Woodinville,. but there are several in the area.
They have a widespread age group of moms. The common bond of course is everyone has children 0-5 yrs old.
The groups get together twice a month and many individual groups out of the larger group meet on their own for playdates and other things.
www.mops.org -- I tried to link it but it didn't work for me today. btw.. although these are hosted by churches you don't have to be a member to go. I'm not and enjoy it all the same.
also,. to note,. I am an 'older' new mom. I really think that just being a new mom has so many new challanges it's nice to be around other moms who are newer to the challanges too,. regardless of whether they are younger or older. I usually find myself the odd one out,... as most other moms my age have older kids already even if they have young ones.. 'have been there done that.'
all the best..
mom to two boys 5 and 3.