In 1999, I published a book listing all the primary administrative subdivisions of the countries of the world. In different countries, they are called states, provinces, regions, departments, governorates, oblasts, and many other names. For convenience, I used the word "statoid" to refer to any of those things. Sample sentence:
The world has about 200 countries, and over 4,000 statoids.
Since then I've created a website (http://www.statoids.com/), which has made the word more popular among the small coterie of geographical trivia enthusiasts.
The word "statoid" has also been used to mean an inconsequential statistical datum, in the same way that a factoid is an interesting but irrelevant fact.
If you do a Google search for statoid, almost all of the hits refer to my website directly or indirectly.