My 12th card was from Washington state in the US, but it came from Canada. :-) Kimu lives in Kelowna in British Columbia, a few hours' drive from the American border. On her most recent trip she went to Washington, where she obviously did some postcard shopping. :-)
The card shows a map of the Cascade Loop, which you can read some more about here.
Kimu sent the card on October 22nd, and its journey of 7,032 kilometers took 11 days; it arrived on November 2nd.