What are the options for Economics PhD students after graduation? I am aware most students end up going into academia as either professors or researchers. What are the options in the corporate world for an Economics PhD graduate?
Your claim that most go into academia is wrong. From the top universities, about half to two-thirds go into academia, but from most universities, most go to non-academic careers. It's simple accounting: a top-30 university graduates about 20 PhDs in economics per year, hires 1 or 2.
Google "[university name] economics job market outcomes", or "[university name] economics placement" to see where the PhDs get jobs.
Corporate world: economic consulting, management consulting, banking, large companies like Amazon, Wal-Mart, Uber.
Sander's answer about checking various Economics PhD program websites for their recent placements is good advice.
Also, the American Economic Association has a list of Job Openings for Economists on their website (https://www.aeaweb.org/joe/listings). This may help give you an idea as to where recent graduates with Economics PhDs will end up.