how long would it take to apply for an US student visa?

First-of-all, you should access into the US Consulate General of Hong Kong, make the online appointment and you need prepare all of documents issued from university before the interview. Afterward, the Officer he/she will be informed your application accepted or not.

Please the below addition information.

All applicants must use the Electronic Visa Application Form (EVAF) available on this website. See "How Do I Apply?"

Applicants can book appointments via our on-line system and we usually have next-day availability. See "How Do I Apply?" Expedited interviews can be obtained in circumstances related to medical and humanitarian emergencies, click here.

Student and exchange visitors (F, J and M visas), petition-based applicants (H, L, O and P visas), crew members (C1/D visa) and Macau residents do not need appointments – these applicants can walk in daily from 8:30-10:30 a.m.

All visas are returned by Hong Kong Post. There is no same day delivery of visas. Most visas are delivered in 3-4 business days, but occasionally additional processing is required which may take 14-90 days. As such, please schedule your appointment as soon as your travel plans are made and as far in advance as possible.