The International Population Geography Conference has made arrangements for a block of rooms in the University of Washington residence halls adjacent to the conference meeting rooms in Alder Hall (on the west side of UW’s campus: map of Alder).

These rooms can be reserved here: housing reservation site

Travel and hotel/room rental websites will show some other options for accommodations in the University District and many more in the city as a whole (especially downtown, which is about 3.5 miles southwest of UW). These tend to be more expensive (especially in summer - peak tourist season) and bear in mind that they may require a bus/rail journey.