The bureau counts people in group quarters separately from the rest of the population.
When they looked to see what might explain surprise increases or drops, some began to suspect problems in the allocation of group quarters.
Eighty-five involve group quarters, and nearly all have yet to be processed.
The Census reported that 99.9% of the population lived in households and 0.1% lived in non-institutionalized group quarters.
The Census Bureau, however, excluded those living in institutions, college dormitories, and other group quarters.
In group quarters, there are 85 (all institutionalized).
Approximately 75 persons are year-round residents; the majority of the population are transient fish processing workers that live in group quarters.
Also, the 2005 sample did not include people living in group quarters, such as prisons, nursing homes or mental institutions.
Of the total population, 3,198 persons were residing in group quarters.
As of 2000, of the 12,407 Downtown residents, 10,437 were in group quarters.