Worth noting that Douglas Copeland who wrote the book Generation X that gives the generation it's name cut it off in 1974 if I recall correctly.

i'm late gen x (78), that's more comfortable to me than being lumped with millennials. (the caveat being, i suppose, that we're dissimilar in some respects from early gen x.)

internet was not widely available until about the time i started college, and gen x media defined popular culture at that time. i also relate to the notion of being the child of two working parents - the first generation of latchkey kids.

i tend to see millennials as people who were kids when i was in school - and they grew up with the internet.