I applied online. The process took 4 weeks. I interviewed at Costco Wholesale (Stockton, CA) in Jun 2013
Interview
The hiring process was fast and efficient. I applied for Costco end of May and they called me in June for an interview. They called me in for a "third" interview the next day. So in reality I only had to be interviewed twice.
There are two managers who interview you. They will both ask you questions for a total of 14 questions. It's important that you maintain focus on the person asking you the questions. One of the managers will try and distract you and sometimes their walkies will go off, but continue to stay focused on the interview.
I skipped the second interview because the managers felt comfortable with me. Just be yourself and you should be fine. Humor is important as well. I was able to make them smile and laugh.
The third interview is just a detailed description of the job duties and what to expect and they will ask you if you accept the job. I took the drug test that day and signed papers. This process took only 2 days.
Interview questions [1]
Question 1
There was no difficult or unexpected question because I went in prepared and practiced most of the answers at home. The questions are pretty much all listed on this website. Also if you know nothing about Costco, be sure to do your homework on it before the first interview.