Hutt River Province

Since 1970 the Hutt River Province Principality has allegedly been a tiny independent country located in western Australia. H.R.H. Prince Leonard presides over the 75 square kilometer country, which is located about 600 kilometers north of the city of Perth.

Here's another Hutt River website. Here's the Hutt River Province "U.S. Home Page". And here's the Wikipedia article on the Hutt River Province. The tiny country has even issued its own coins. And its own postage stamps.