http://masteroverwatch.com/leaderboards/pc/us/mode/ranked/category/skillrating
Here is a good distribution of competitive rank.
55 is above average.
I am rank 61 currently, have been to 62 though. I used to hover around 55, but I've been making my game better, and playing with at least one friend whos near your rank helps.
At around 77 rank you are in the top 500 players