It's now March, so I've got another set of license plates to post from what I saw during February.
U.S. States: Arizona, Arkansas, California, Colorado, Connecticut, Delaware, Florida, Georgia, Illinois, Indiana, Iowa, Kansas, Kentucky, Maine, Maryland, Massachusetts, Michigan, Minnesota, Missouri, New Hampshire, New Jersey, New Mexico, New York, North Carolina, Ohio, Pennsylvania, Rhode Island, South Carolina, Tennessee, Texas, Utah, Vermont, Virginia, Washington, West Virginia, Wisconsin
Other U.S.: District of Columbia, U.S. government
Canada: Manitoba, Ontario
Lost from January: Idaho, Louisiana, Montana, Oregon, South Dakota
Gained (not in January): Kentucky, New Mexico, Washington, West Virginia
I still haven't seen Alaska, Hawaii, Mississippi, and Wyoming since I started this in October. I've seen all the other U.S. states. I've seen four Canadian provinces (the other two are New Brunswick and Quebec) and two U.S. territories (D.C. and Puerto Rico).