In the Vinony graph
It is catalogued under the topic ISO 3166 data modules.
Its subject is documented across 30 Wikipedia language editions.
~2 min read
Encyclopedic overview
Module documentation
This module contains all ISO 3166-2 codes for United States. It is used by Module:ISO 3166.
Excerpted from Wikipedia’s “Module:ISO 3166/data/US” article, available under the CC BY-SA 4.0 licence.