News Courtesy of Searchengineland.com:
Who uses Bing?
Bing is the second-largest search engine in the US, and it has a diverse audience. According to statistics released by comScore in March 2018, there are 145 million unique searchers on the Bing network. That is roughly one in every two people in the US, conducting more than 6 billion monthly search queries on Bing.
In the United States, Bing has 33.8 percent desktop market share and reaches approximately one in 45 people across all devices.
Bing has more than doubled its market share since launch, and that share has increased for six years straight. In the US, Bing reaches 66 million searchers who are not on Google.
Internationally, searchers on Bing conduct over 20 billion searches monthly, and Bing has impressive search share in more than a dozen markets including the UK (19 percent), Germany (13 percent) France (19 percent), Australia (12 percent) and Canada (16 percent.)
Ryan’s Take 
There’s no denying that Google dominates all other search engines for market share. Their web browser, Chrome, is used by over 2/3rds of people surfing the internet worldwide. They are by far leading the pack as far as usage statistics are concerned. However, when we start talking about percentages it is easy to forget the other numbers that deserve mention.
The 6 billion monthly search queries performed on Bing in the U.S. is impressive on its own. Yes, most of the organic traffic to your website will come from Google. But if you’re not factoring Bing into your SEO, you’re missing out on a large chunk of that traffic. Over 33% to be precise.
Since Bing also powers Yahoo, whatever optimizations you make to improve your Bing rankings should roughly translate over to Yahoo. Bing’s Webmaster Tools is easy enough to set up, especially if you’re familiar with Google’s Webmaster Tools. There are some important differences as far as the information that can be gathered.
Perhaps the most obvious is the absence of Not Provided keywords. A while back Google began to hide search data from their logged in users. Today, it is quite common to see Not Provided as the top result in keyword analytics. Bing, to their credit, doesn’t mask search terms. This gives you a better idea of what people are searching for and clicking on.
I do find it ironic that you can sign up for Bing Webmaster Tools with your Google login. You’d think since they are bitter rivals that they wouldn’t allow such a thing. I suppose, for the sake of convenience, it was worth it to implement that in the signup process. It only takes a few minutes to set up. I suggest every webmaster start doing so!
