28% is about the national average in the US, interesting that this isn't changing much in young vs old. [1]. Also, the distribution is quite bimodal, a small n

28% is about the national average in the US, interesting that this isn't changing much in young vs old. [1]. Also, the distribution is quite bimodal, a small number of US MSAs have tons of college grads (Boston, SF, NYC) vs. huge tracts of the US with few graduates at all. [1] "Coming Apart" by Charles Murray, highly recommended.