What really gets on my nerves is that I can't configure it to use google.com when I search from the omnibox, I don't even know from where is it getting my current country, I guess it's IP geolocation.
I haven't looked at this explicitly, but I would expect that if you sign in to chrome then it will follow your account preferences for which locality to use. Does that not work?
I prefer to have everything tech-related written in English, but with Google, I constantly get some of their services translated into my local language. I have to keep translating their services back to English.