State of the States (and DC): medical marijuana laws (May 2012)
http://medicalmarijuana.procon.org/view.resource.php?resourceID=002481
Total population of the U.S. (July 2011) - 311,591,917
States (and DC) with medical marijuana laws and their population numbers
Alaska 722,718
Arizona 6,482,505
California - pop. 37,691,912
Colorado 5,116,769
Connecticut (just passed!) 3,580,709
District of Columbia- pop. 617,996
Delaware 907,135
Hawaii 1,374,810
Maine 1,328,188
Michigan 9,876,187
Montana 998,199
Nevada 2,723,322
New Hampshire (pending Senate vote) 1,318,194
New Jersey- pop. 8,821,155
New Mexico 2,082,224
Oregon- pop. 3,871,859
Rhode Island 1,051,302
Vermont 626,431
Washington State- pop. 6,830,038
States with legislation pending to legalize medical marijuana:
Alabama
Idaho
Illinois
Kansas
Maryland
Massachusetts
Missouri
New York
Ohio
Pennsylvania
State with pending legislation that amends current law but doesn't legalize
Kentucky
States whose medical marijuana bills failed in 2012
(these bills failed, for the most part, because they did not move out of committee and thus died at the end of legislative deadlines)
Indiana
Iowa
Kansas
Mississippi
Oklahoma
Tennessee
West Virginia
Wisconsin