Linguistic Society of America (LSA)
The membership page says:
The Linguistic Society of America is the major professional society in the United States that is exclusively dedicated to the advancement of the scientific study of language. With nearly 4,000 members, the LSA speaks on behalf of the field of linguistics and also serves as an advocate for sound educational and political policies that affect not only professionals and students of language, but virtually all segments of society. Founded in 1924, the LSA has on many occasions made the case to governments, universities, foundations, and the public to support linguistic research and to see that our scientific discoveries are effectively applied.
Language and linguistics are important in the description of numeric data but even more so for non-numeric data.
Another avenue to sharpen your skills at both.
PS: I welcome your suggestions of other language/linguistic institutions and organizations. Even if our machines don’t understand natural language, our users do.