Improving Nominatim results for who exactly?
I am proud of my County and it is included in my address.  Most businesses use them too.  

https://www.bankofireland.com/branch-locator/enniskillen/
https://www.axani.co.uk/insurance/branches/fermanagh/enniskillen/
https://www.dunnesstores.com/store/enniskillen-co-fermanagh-bt746ja/48/