I downloaded the Google Maps extension from the Web Store and installed it into Google Chrome. Opened a new tab and clicked the Google Maps button, it got me straight to a zoomed out picture of the United States of America. I couldn't find any options inside Chrome's settings or extension settings to change my default location.

Had a bit of a Google and found quite a few forum threads of people with a location mismatch. The main suggestion was to install the English (UK) version of Chrome (instead of the English (US) version which is the default version on the download site). The next most popular suggestion was to change the language settings to add English (UK) and increase it's priority. I tried all of the suggestions and none of it worked.

Today, when I clicked the Google Maps extension button it took me to the USA as usual but I noticed on the right information panel it said "United States Not your current location? Correct it". So I clicked the "Correct it" link. I entered my location and Google Maps took me there. I closed the tab and reopened a new one, clicked the Google Maps extension button and Hey Presto I'm taken straight to my real location.

It's so simple to change the default location and the actual setting is just in the right place. If you are out and about you can easily change to any location at any zoom level. Perfect.