The R language has jumped to number 12 in the November 2014 TIOBE Index of programming language popularity. This is R's highest ranking in the history of the TIOBE index, which has been ranking languages since 2003. A high ranking is an impressive achievement for R given that it is a domain-specific language (designed for data science applications), and puts it in the company of general-purpose languages like C, Java and Python. Here are the top 15 from the latest index:
Other data science / statistics languages in the top 50 include SAS (at #22), Matlab (#24) and Scala (#31).
The TIOBE rankings are based on search engine results and on the number of skilled engineers world-wide, courses and third party vendors. It's interesting to note that while this methodology is very different from that used for the IEEE language popularity rankings, R also ranked very highly in that list (at #9 in July 2014).