USA Today article, a Modern Language Association survey reveals that American Sign Language is well on its way to becoming the 3rd most studied foreign language at colleges and universities. German has only 4,500 more students than ASL, and ASL studies have increased 16% from three years ago.
The 1st most studied language is Spanish, then French. But only 8.6% of students at colleges that offer foreign languages actually take the courses.
I remember ASL being a popular option when I was in college. It was popular in high school to say that you knew sign language, although most of the time that meant simply the signed alphabet. At my high school, only Spanish and French were offered as foreign language courses. I ended up having to take American Sign Language at the local community college, but it worked out well because it counted for both high school and college credit.
You can read the full report here.