noncounty
/ˈnɑnkʌnti/Definitions
1. noun
A county that is not a county in the sense of a local government area, especially in England and Wales.
“The non-county areas were merged with nearby counties to form a larger administrative unit.”
2. adjective
Relating to or characteristic of a county that is not a county in the sense of a local government area.
“The non-county town had a unique culture and history separate from the surrounding counties.”