My answer would be the place that I'm currently living in.
If someone asks where you're from do you answer where your originally from (ethnicity) or what passport do you have? Example: your from the UK originally but you have an American passport so do you answer British or American?
One of the oddest questions I was asked at the end of a survey that I participated in whilst waiting for my baggage at Heathrow Airport was "Where is your primary place of residence?"
I suddenly had to choose between Los Angeles, Bedfordshire and Belfast.
Quick maths made me (even if only temporarily) an American resident. For someone so English, it was a bit of a shock.
I say my current city.
Im texan
I have both American and Australian passports, but since I've lived in Australia my whole life, and I've only been to the US twice, I say that I'm Australian.
That question usually comes up within a certain context and that usually influences my answer.