On January 1, 2012, Marin County's ordinance banning single-use carry-out plastic bags went into effect. This ordinance affects unincorporated areas of Marin County, which means that it applies only to county regions that are not part of any municipality.
For more specifics regarding the ordinance rationale, types of businesses affected, and the types of bags that are "allowable," please view our handout:
Plastic Bag Ban Ordinance Handout
For your convenience, here is a link to the full text of the ordinance:
Plastic Bag Ban Ordinance