No. 4: Detroit
The new census numbers show a 25 percent decline in the city’s population, a shock to even the most pessimistic local observers. Detroit, measured at 713,777 people in 2010, is in free fall. (via The 10 most segregated urban areas in America | Slide Show - Salon.com)
I live in Oakland County and even here, we’ve seen the dramatic decline, even though we’re not nearly as bad as Detroit (which is in Wayne County).