How many people use Blogger? I can estimate that around 75,000,000 blogger us Blogger. This estimate is not very reliable, but it's the best I can do. I could not find any up to date statistics how many people use Blogger. At the bottom of blogs/websites that use the Free version of Blogger is the text 'is powered by Blogger'. I did an exact Google match search for that term, and the results were 76,200,000.
My search results don't take into account, blog authors that have removed the text 'is powered by Blogger' from the bottom of their blogs. These numbers also don't take into account non-blogger website that just happened to mention the phrase 'is powered by Blogger' in their text content.