States and cities that have opted to legally regulate adult social use and/or medical use of marijuana:

Marijuana Legalization
(23): Alaska, Arizona, California, Colorado, Connecticut, Delaware, Illinois, Maine, Maryland, Massachusetts, Michigan, Minnesota, Missouri, Montana, Nevada, New Jersey, New Mexico, New York, Oregon, Rhode Island, Vermont, Virginia, Washington.
*Note: Marijuana is also legal in Washington, DC, Guam, and the Marshall Islands, however these are not states.

Marijuana Decriminalization
(14): Connecticut, Delaware, Maryland, Hawaii, Minnesota, Mississippi, Missouri, Nebraska, New Hampshire, North Carolina, North Dakota, Ohio, Rhode Island

Medical Marijuana Legalization
(38): Alabama, Alaska, Arizona, Arkansas, California, Colorado, Connecticut, Delaware, Florida, Hawaii, Illinois, Kentucky*, Louisiana*, Maine, Maryland, Massachusetts, Michigan, Minnesota*, Mississippi, Missouri, Montana, Nevada, New Hampshire, New Jersey, New Mexico, New York*, North Dakota, Ohio*, Oklahoma, Oregon, Pennsylvania*, Rhode Island, South Dakota, Utah, Vermont, Virginia, Washington, West Virginia* (also, Washington, DC)

*no smoking allowed

Medical Marijuana Legalization - CBD Oil Only
(14): Alabama, Georgia, Indiana, Iowa, Kansas, Kentucky, Mississippi, North Carolina, South Carolina, Tennessee, Texas, Virginia, Wisconsin, Wyoming

Hemp Legalization*
Hemp is now federally legal. Only two states in the country - Idaho and Mississippi - do not allow cultivation of hemp for commercial, research or pilot programs.

Cities That Have Legalized Marijuana
(5): Breckenridge, CO; Denver, CO; Portland, ME; South Portland, ME; Washington, DC

Cities That Have Decriminalized or Depenalized Marijuana
(57): Albuquerque, NM; Allentown, PA; Ann Arbor, MI; Athens, OH; Atlanta, GA; Austin, TX; Bellaire, OH; Berkeley, CA; Berkley, MI; Chicago, IL; Cincinnati, OH; Cocoa Beach, FL; Columbia, MO; Dayton, OH; Daytona Beach, FL; Detroit, MI; East Lansing, MI; Eau Claire, WI; Ferndale, MI; Flint, MI; Fremont, OH; Grand Rapids, MI; Houston, TX; Huntington Woods, MI; Jackson, MI; Jersey City, NJ; Kansas City, MO; Keego Harbor, MI; Lancaster, PA; Logan, OH; Madison, WI; Miami, FL; Milwaukee, WI; Monona, WI; Mount Pleasant, MI; New Orleans, LA; Newark, OH; Norfolk, VA; Norwood, OH; New York, NY; Oregon, OH; Orlando, FL; Philadelphia, PA; Pittsburgh, PA; Pleasant Ridge, MI; Portage, MI; Port Huron, MI; Roseville, OH; Saginaw, MI; State College, PA; Santa Fe, NM; St. Louis, MO; Tampa, FL; Toledo, OH; Wichita, KS; Windham, OH; York, PA

Cities That Have Made Marijuana Arrests the Lowest Priority
(12): Eureka Springs, AR; Fayetteville, AR; Hailey; ID; Kalamazoo, MI; Oakland, CA; San Francisco, CA; Santa Barbara, CA; Santa Cruz, CA; Santa Monica, CA; Seattle, WA; Tacoma, WA; Tampa, FL; West Hollywood, CA

States That Have Decriminalized Entheogenic Plants (including psilocybin)
(3): Colorado, New Jersey*, Oregon

*for possessing an ounce or less of mushrooms from a third-degree crime to a disorderly-persons offense

Cities That Have Decriminalized Entheogenic Plants (including psilocybin)
(8): Ann Arbor, MI; Cambridge, MA; Denver, CO; Oakland, CA; Santa Cruz, CA; Somerville, MA; Vancouver, BC; Washington, DC

States That Have Decriminalized Possession of Controlled Substances
(1): Oregon

Nations That Have Legalized Marijuana
(3): Canada, Uruguay, Malta

Nations That Have Decriminalized Possession of Controlled Substances
(1): Portugal

Source

National Organization for the Reform of Marijuana Laws. Legalization. Last accessed June 30, 2021.
ProCon.org. (2021, June 22). Legal Medical Marijuana States and DC, last accessed August 5, 2022.
Office of the Governor, State of Connecticut, Governor Lamont Statement on Final Passage of Legislation Legalizing Adult-Use Cannabis, June 17, 2021.
State of NY. "Governor Cuomo Signs Legislation Legalizing Adult-Use Cannabis." Governor's Office. March 31, 2021.
"Madison Takes ‘Pot’shot at Wisconsin, Joins Growing List of Municipalities to Decriminalize Cannabis." National Law Review. Dec. 11, 2020.
State of Rhode Island. "Governor McKee Signs Legislation Legalizing and Safely Regulating Recreational Cannabis in Rhode Island." Office of the Governor, May 25, 2022. Last accessed June 3, 2022.
Malta. Bill No. 241 Authority on the Responsible Use of Cannabis Bill. Parliament of Malta. Last accessed June 3, 2022.
State of Maryland, State Board of Elections, Unofficial 2022 Gubernatorial General Election Results for Question 4, last accessed Nov. 11, 2022.
Ballotpedia, Colorado Proposition 122, Decriminalization and Regulated Access Program for Certain Psychedelic Plants and Fungi Initiative (2022), last accessed Nov. 11, 2022.
Ballotpedia, Missouri Amendment 3, Marijuana Legalization Initiative (2022), last accessed Nov. 13, 2022.
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