I am wondering where I could take the official HSK tests. In official I mean official enough to put on a resume. Can you take it online or would one have to go in to a testing center? I live in the United States and I am not sure where I could find an officially recognized testing center near me. Is there a list of official testing centers somewhere?

Visit the Hanban website. Here's the English version (Click the links on the left side of the page) and the Chinese Version.

多谢， 大力。