Can I add additional fields to "State and Country Picklists"

Question

My org uses "State and Country Picklists" and I've been asked if it's possible add additional fields to the object so we can align each country to a region, sub-region and cluster and the ISO 3 digit country code.

For example: Madagascar = Country Code: 450, Region: CEMEA, Sub-Region: SSA, Cluster: East Africa... To do this, I would need to add 4 new fields to the "State and Country Picklists" so that I could assign each country the proper regional values. Is it possible to add custom fields to the "State and Country Picklists"?

Answer 1

No, you cannot add more fields to the standard picklist.

You can add new complete country/state options, but you're limited to whatever fields they provide as options.

There's many ideas about exploring enhancements in this regard that you can look to upvote although I think it's important to highlight they don't seem to have this on their roadmap based on the info below:

1. Accepting ISO 3 code values and compliant text updates might match what you're looking, but has no updates and is 6 years old.
2. State & Country Picklists as a custom field type for other custom object. No update for 2 years and is 6 years old.
3. Similar to #1 above, except with more focus on configuring accepted text values. 6 years old.
4. Ability to customize the sort order is 5 years old and no update.
5. Currently, you're not even able to use deployments for new countries or states. 5 years old, no update.