Second Order Administrative Division

Basic:

A second order administrative division is a type of country subsidiary.

Documentation:

Comment: A subdivision of a first order administrative division, such as a county in a state of the United States.

Structure:

Every second order administrative division is part of some first order administrative division.
Every third order administrative division is part of some second order administrative division.

Miscellaneous:

A US county is a type of second order administrative division.