As a mother of 2 preschoolers, I've been recommended by many people to join MOPS (Mothers of Preschoolers), a mom group for women with children from birth to five years old. In San Luis Obispo County, there are 4 locations. 

There's a nominal fee to be part of MOPS per semester and they are all different, depending on the chapter. Childcare is provided while you attend these mom meetings. Here are the details below of each MOPS chapter in the San Luis Obispo County. It's a great group to join to meet with other moms in a local community. 

SLO MOPS
1350 Osos St., San Luis Obispo, Ca 93401 (Grace Central Coast)
SLO MOPS meet twice a month on the 2nd and 4th Tuesday of the month Sept-May at 9:00am - 11:00am. Their group page website is: https://www.mops.org/groups/mopsslo 

Lompoc Foursquare Church MOPS
125 N. C St., Lompoc, CA 93436
Lompoc Foursquare Church MOPS meet twice a month on the 1st & 3rd Thursday, Sept - May at 9:15 - 11:30. Their group page website is: https://www.mops.org/groups/mylfc

New Hope Lompoc MOPS
213 N. J St., Lompoc, CA 93436
New Hope Lompoc MOPS meet twice a month on the 1st & 3rd Mondays at 10:30am-12:30pm. New Hope Lompoc MOPS group page website.

North County MOPS 
940 Creston Rd., Paso Robles, CA 93446
North County MOPS meet twice a month on the First and Third Tuesday at 9:30 am - 11:30am. Their group page website is: https://www.mops.org/groups/northcountymops