Fun Facts:

• Your tweets have a 12x higher chance of being retweeted if you ask for it, and 23x higher if you actually spell out the word “retweet”
• YouTube reaches more U.S. adults aged 18–34 than any cable network
• Tweets with hashtags get 2x more engagement
• Tweets with images get 2x the engagement
• More than 50% of people polled say they are more likely to trust an organization if they have a large number of followers on Facebook, Twitter, etc.

Demographics:

• 25-34 year olds are the largest demographic on Facebook
• 12% more women report using Facebook than men
• 88% of active Facebook users live outside the USA
• 75% of adult Facebook users make over $75,000
• Most Twitter users live in urban centers
• Only 32% of Twitter users make more than $75,000
• 80%+ YouTube users make over $75,000 per year and have a college degree
• LinkedIn is most popular with 25-29 year olds
• Snapchat users are more likely to only make $30,000 to $40,000 per year

https://blog.hootsuite.com/social-media-demographics/