I'm VF FTTH in Limerick and it often show my location as Dublin. I wouldn't be too bothered by it, unless it's actively affecting you. On my work laptop, because of a VPN, it also shows my IP as being in Dublin. I think it's basically the ISP's not using correct info on the IP's and it results in a general area (in this case, Dublin) rather than a specific area.
I called them and they made some change. It may have been only an address that needed to be updated but it shows correctly now in game.