If you're here looking up HarperCollins customer care, you probably already know who they are. But it helps to get an idea of how big they are and what their support operation looks like if you are a customer. HarperCollins also goes by or is associated with the names Harpercollins publishers llc, HarperCollins. They are considered to be part of the following sectors and industries: Consumer Discretionary, Media, Publishing. HarperCollins is associated with terms like private, publishing, e-commerce, b2c by their customers and industry analysts. They are similar to companies like Chicago Tribune, Los Angeles Times, USA TODAY, The Telegraph, Simon & Schuster, Fox News, Entravision Communications. They employ 2,720 people according to customers in the know.