The Stack Overflow Q&A dev team has 2 people in New York, out of a team of 10 team. The Careers dev team is more New York heavy, 3 remote and 5 in New York. The sysadmin team is also quite remote, though I don't know the breakdown offhand.
I believe at this point most new technical hires are remote.
Our offices are mostly sales, Denver and London exclusively so.