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. Author manuscript; available in PMC: 2018 Dec 28.
Published in final edited form as: Drug Alcohol Depend. 2015 Nov 22;159:72–79. doi: 10.1016/j.drugalcdep.2015.11.015

Table 1.

Details on 23 US states and District of Columbia allowing medical marijuana (MMJ), availability of registry data, and number of registered MMJ participants.

State Date MMJ
Law
Passed		 MMJ
Registry		 Registry Data
Availabilitya 		Time
Pointsb 		# of MMJ
Participants		 As of
Date		 Census
Populationc 		MMJ
Participants
Per 1000
Alaska 11/3/1998 Mandatory 2008–2015 7 1,526 6/25/15 522,997 2.9
Arizona 11/2/2010 Mandatory 2011–2015 27 70,190 4/30/15 4,989,558 14.1
California 11/5/1996 Voluntary 2005–2015 11 5,786 6/8/15 29,496,381 NA
Colorado 11/7/2000 Mandatory 2001–2015 100+ 114,713 4/30/15 3,993,648 28.7
Connecticut 3/31/2012 Mandatory 2013–2014 3 4,097 6/5/15 2,813,652 1.5
Delaware 5/13/2011 Mandatory 2012 1 60 2012 727,483 <0.1
District of Columbia 5/21/2010 Mandatory 2014–2015 31 3,516 6/1/15 531,900 6.6
Hawaii 6/14/2000 Mandatory 2001–2014 14 12,139 6/30/14 1,063,904 11.4
Illinois 8/1/2013 Mandatory 2014–2015 6 2600d 7/1/15 9,865,054 0.3
Maine 11/2/1999 Voluntary 2011–2013 3 1,768 12/31/13 1,069,723 NA
Maryland 4/14/2014 Mandatory Not accepting
Massachusetts 11/6/2012 Mandatory 2015 1 5,600 3/1/15 5,349,320 1.0
Michigan 11/4/2008 Mandatory 2009–2014 6 96,408 9/30/14 7,646,466 12.6
Minnesota 5/30/2014 Mandatory 2015 1 98 7/1/15 4,172,517 <0.1
Montana 11/2/2004 Mandatory 2005–2015 82 11,717 5/13/15 787,519 14.9
Nevada 11/7/2000 Mandatory 2012–2015 32 9,345 5/30/15 2,116,445 4.4
New Hampshire 7/23/2013 Mandatory Not accepting
New Jersey 1/18/2010 Mandatory 2012–2014 6 2,727 12/31/14 6,868,119 0.4
New Mexico 3/13/2007 Mandatory 2012–2015 32 14,623 5/28/15 1,564,485 9.3
New York 7/5/2014 Mandatory Not accepting
Oregon 11/3/1998 Mandatory 2009–2015 36 71,191 4/1/15 3,070,003 23.2
Rhode Island 1/3/2006 Mandatory 2006–2015 10 11,421 6/26/15 838,281 13.6
Vermont 7/1/2004 Mandatory 2006–2015 24 1,754 3/25/15 503,282 3.5
Washington 11/3/1998 None
a

Range of years MMJ registry data was available. ‘Not accepting’ means states have not begun accepting MMJ applications.

b

Data on the number of MMJ participants are available for the number of time points within the range of registry data available.

c

Adult (18+) state population based on US Census estimates for 2014

d

Estimate (not actual number) based on Illinois Medical Cannabis Pilot Program website updates.