Winning Numbers for Wyoming (WY) Mega Millions – September 1999
State lotteries
- AZ - Arizona
- AR - Arkansas
- CA - California
- CO - Colorado
- CT - Connecticut
- DE - Delaware
- FL - Florida
- GA - Georgia
- ID - Idaho
- IL - Illinois
- IN - Indiana
- IA - Iowa
- KS - Kansas
- KY - Kentucky
- LA - Louisiana
- ME - Maine
- MD - Maryland
- MA - Massachusetts
- MI - Michigan
- MN - Minnesota
- MS - Mississippi
- MO - Missouri
- MT - Montana
- NE - Nebraska
- NH - New Hampshire
- NJ - New Jersey
- NM - New Mexico
- NY - New York
- NC - North Carolina
- ND - North Dakota
- OH - Ohio
- OK - Oklahoma
- OR - Oregon
- PA - Pennsylvania
- PR - Puerto Rico
- RI - Rhode Island
- SC - South Carolina
- SD - South Dakota
- TN - Tennessee
- TX - Texas
- VT - Vermont
- VA - Virginia
- WA - Washington
- DC - Washington, D.C.
- WV - West Virginia
- WI - Wisconsin
- WY - Wyoming