Crime in Washington, D.C., is directly related to the city's demographics, geography, and unique criminal justice system. The District's population reached a peak of 802,178 in 1950. Shortly after that, the city began losing residents, and by 1980 Washington had lost one-quarter of its population. The population loss to the suburbs also created a new demographic pattern, which divided affluent neighborhoods west of Rock Creek Park from the less well-off neighborhoods to the east.