Look closely at the questions those surveys are asking. "Where were you living at the time you most recently became homeless" isn't the right question as there

Look closely at the questions those surveys are asking. "Where were you living at the time you most recently became homeless" isn't the right question as there are temporary housing options (crashing with a friend, living in a vehicle) under which many do not consider themselves homeless. From your own link, only 25% were born / grew up in King county.