You could always be economical with the truth and say that yes you do work in the area. The odds of them asking you to prove it are slim to none, Even if they did, how are you supposed to do that? What are they going to do, call your boss to prove it? Even if for hypothetical reasons, you DID work in the area, odds are your pay check will not have an address printed on it, that matches the area.
Or just take a different view of what they mean by working " in the locality". You live and work in Dublin, the account will be opened in Dublin. Who cares a thrupenny bit if you live in Howth, you work in Blackrock, but you want to open the account in Donnybrook, as that is what works best for you? Dublin is Dublin !