http://overflow.solutions/interactive-visualizations/how-do-americans-differ-by-age/

In the upper right corner there's a box (variable switch) you can change what you're comparing.  It starts with number of times married but you can look at education, employment and other things.

Across the bottom is age.  Looking at 50 year olds you can see 15.88% have never been married.  I placed my mouse cursor on the never been married aqua color bar and at the 50 year old point to get this information.

Or looking at employment I found 19.85% of 70 year olds are employed.