Twitter has only one office globally.
=== Censorship and moderation ===Twitter is banned completely in Russia, Iran, China and North Korea, and has been intermittently blocked in numerous countries including Egypt, Iraq, Nigeria, Turkey, Venezuela and Turkmenistan on different bases
According to Quancast, 27 million people in the US used Twitter as of September 3, 2009; 63% of Twitter users are under 35 years old; 60% of Twitter users are Caucasian, but a higher than average (compared to other Internet properties) are African American/black (16%) and Hispanic (11%); 58% of Twitter users have a total household income of at least US$60,000

