[myth2018]

Funny thing is that americans do that all the time, even in international settings like a coworking space full of expats. Everybody introducing themselves with a "hi, I'm from this country", except americans telling their state or city. Are they expecting us to be familiar with their geography, or just unaware of alternative geographical frames of reference?

[rightbyte]

I don't think that is strange at all. If you can reasonable assume the person you are talking to is aware of e.g. England, Minnesota, Scotland, Tasmania, Sicily or what not you can go straight for that?