Jeff Koyen is was born in Parsippany, NJ. He has since lived in Philadelphia, New York City and Prague.
From 1994-2000, he published the zine Crank. During that time, he also contributed to Factsheet Five, Plotz, Fortean Times and other publications. Since then, he has founded the website 100 Words and served as editor for the New York Press. He currently works as a freelance writer and has written an unpublished novel.