Yesterday the Census Bureau released their July 1, 2009 estimate for the city of Detroit and for all other incoporated places. The estimate for Detroit is 910,200. This implies a loss of just 1700 from July 1, 2008 and 40,000 from census data 2000.

Decade Pop loss in city of Detroit according to census
1950s 170,000
1960s 159,000
1970s