I sent him an email as below. I'll let you know if he replies... I don't listen to his show so if he chooses to reply on air rather than by email I won't hear it but you might.
Hi Pat,
I’m told that, during a recent show, you claimed that 90% of the population of Balbriggan is “foreign”. I would be obliged if you could clarify if that is what you said and, if so, how you defined “foreign” to arrive at that (frankly ridiculous) figure?
Kind Regards,
Stephen O’Connell.