The Census Bureau's annual estimate of the U.S. population by single year of age came out earlier this month. It's fun to play with! Scroll down to "Datasets" on this page to get your very own file census.gov/data/datasets/… 
For my latest column, I added up the population for each generation, using the generational start-and-stop years (if not necessarily the generational names) chosen by @pewresearch. Shocking revelation: there are lots of baby boomers and millennials! bloomberg.com/view/articles/…
Then I looked the generational breakdown of Congress, using the Voteview database voteview.com/data It's really heavy on boomers, and has been for a while. Gen Xers are underrepresented, even when you factor in their smaller share of the population
It's possible this is just evidence of the oldification of Congress. But I think it's also that bigger generations have a political advantage. Someday the millenials will be calling the shots. Gen X and "iGen," maybe not bloomberg.com/view/articles/…
