What Is The Source Of The Garmin City Navigator POIs

They come from Here and are imbedded into the map data. Garmin strips a lot of the data from the Here file to make their release fit their units. A full download of map and data from Here is over 12GB in size. I would get that size data file for my Land Rover every month.

Updates for the kia nav have been in the 38-40GB range last few updates. Talk about bloat.

"...Garmin strips a lot of the data from the Here file to make their release fit their units..."

How can I get the unstripped version?

I have a 32GB micro SD card in my Garmin Zumo XT and I would gladly install a larger one, if necessary.

I believe all current Garmin units specify a maximum microSD card size of 32GB. A larger one may work but it's not validated by Garmin.

While I recall that 32GB was the limit in the past, it looks like that has changed:

Installing a Memory Card for Maps and Data
You can install a memory card to increase the storage space for maps and other data on your device. You can purchase memory cards from an electronics supplier, or go to www.garmin.com/maps to purchase a memory card with pre-loaded Garmin® mapping software. The device supports microSD® memory cards from 4 to 256 GB.

https://www8.garmin.com/manuals/webhelp/GUID-E024D22C-EA17-4...

https://www.infobelpro.com/poi-data/united-states.

A device may draw maps more slowly when using a card with a larger capacity if there are too many files and/or large files on the card. https://support.garmin.com/en-US/?faq=UsL6MuMMCM8PpgAhUUCqp7...

See Using a 64 GB microSD/SD Memory Card or Larger for devices below compatible with 64 GB microSD memory cards or larger. https://support.garmin.com/en-US/?faq=Fhbvkb1ccLA06I7MdtsHH9...