US: 65%, CA: 7.4%, UK: 6.1%, Germany: 2.2%, Australia: 2.1%, India: 1.7%, Netherlands: 1%, France: 1%
Drilling down within the US: New York: 8.8%, SF: 8.6%, Chicago: 4.6%, Seattle: 2.5%, Austin, LA, Mt View: 2%, Boston: 1.5%, Palo Alto: 1.4%, Portland: 1.3%, Cambridge: 1.3%
Drilling down in the bay: SF 48% Mt View 11% PA 8% Sunnyvale 6% San Jose 5% Berkeley 4% Oakland 4% San Mateo 3% Santa Monica 3% Santa Clara 3% Stanford 2% Cupertino 2% Redwood City 2% Emeryville 1% Fremont 1% Menlo Park 1%
Which reminds me - a good way I like to check what the tech-iness of a city is to look at these stats, search for it in quora/reddit/hnsearch and take a look at the number of hits.
Caveats: Our site is currently tailored towards the US and Canadian markets and generally gets posted to HN during US waking hours.
If you want this report for your site: Create a custom report in GA that looks like this http://dl.dropbox.com/u/3446069/Screenshots/bd.png And drill into news.ycombinator.com