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. Author manuscript; available in PMC: 2022 May 1.
Published in final edited form as: Health Econ. 2021 Feb 23;30(5):989–1000. doi: 10.1002/hec.4237

TABLE 2.

State recreational marijuana law effective dates, as of December 10, 2020

State Effective date Data source
Alaska 2015/02 APIS
Arizona 2020/11 ProCon.org
California 2016/11 APIS
Colorado 2012/12 APIS
Illinois 2020/01 ProCon.org
Maine 2017/01 APIS
Massachusetts 2016/12 APIS
Michigan 2018/12 APIS
Montana 2020/11 ProCon.org
Nevada 2017/01 APIS
New Jersey 2020/11 ProCon.org
Oregon 2015/07 APIS
South Dakota 2020/11 ProCon.org
Vermont 2018/07 APIS
Washington 2012/12 APIS

Sources: Alcohol Policy Information System (APIS, 2019) and ProCon.org. (2020b).

Notes: Since Alcohol Policy Information System only updated recreational marijuana law (RML) effective dates through March 2019, we collected RML effective dates after March 2019 from ProCon.org.