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

Marijuana Legalization
(21): Alaska, Arizona, California, Colorado, Connecticut, Illinois, Maine, Maryland, Massachusetts, Michigan, 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
(37): Alabama, Alaska, Arizona, Arkansas, California, Colorado, Connecticut, Delaware, Florida, Hawaii, Illinois, 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