It probably comes as no surprise that the United States is the country that produces the most tweets. But could you guess second place?

This new infographic explores the distribution of tweets across the world, identifying which countries tweet the most – and which have yet to embrace 140-character communication.

The Oxford University website hosts this geographical Twitter study conducted by Mark Graham of the Oxford Internet Institute and Monica Stephens of Humboldt State in California.

The pair examined 20 percent of geographically-tagged tweets – or a total of about 4.5 million tweets – sent between March 5 and March 13, 2012, sorting them by country.

According to the study, the United States is the world’s largest tweet-producer, creating 30 percent of all tweets on the network.

Following the US is Brazil with 22 percent, and Indonesia and the UK tied for third with 6 percent each.

The infographic also visualizes the different countries’ penetration rate – the number of Twitter users compared to the number of total internet users in the country.

Brazil takes first place in this measurement alongside Malaysia and Kuwait.

You can take a look at the infographic below, and see how big your country is on Twitter (click to enlarge):

(Infographic courtesy of Oxford University website; Hat tip: Daily Mail; World map image via Shutterstock)