By 1924, the population had reached 15,000 and the community was self-sustaining with schools, employment and services for its residents. Growth slowed during the war years, but following the war it began to increase yet again. Many businesses were prospering at the time and the Hilltop's political activeness was at its peak. With the mayor of Columbus hailing from the Hilltop, there was a strong sense of community within the area. With General Motors (Fisher Body and Delphi divisions) being the source of jobs for many local residents. As time went on, Hilltop became susceptible to many of the same problems as other urban areas as businesses began to close and residents moved further outside the city limits.