You will find a table in this post that shows the average engagement rates on both Instagram and Twitter. There is a clear trend – the fewer followers you have, the higher their level of engagement. For example, Instagram accounts with fewer than 1,000 followers average 8% engagement. This drops down to 5.7% when you look at accounts with <5,000 followers. Engagement continues to drop as follower numbers rise: 4% for <10,000 followers, 2.4% for <100,000 followers, and 1.7% for 100,000+ followers.