Instead of brother or sister, we can say sibling. Instead of password and username, we can say credentials.
A compressed form with a stricter style provides a formal sensation. I'd like to achieve that for the governmental units of division for my country. Our kingdom is divided into 30 counties and each of those is divided in a total of 300 municipalities.
How can I say county and/or municipality using a single word (or at least a collective term not mentioning those explicitly)? Is there a formal term for govermentally statued administrative units of geographical division but a bit shorter?