The Detroit Police Department (DPD), established in 1865, is responsible for the city of Detroit, Michigan.

The Detroit Police Department was established in 1865 to serve the city's growing population and covers the city with 5 districts and two precincts. The Detroit Police Department was also the first in the country to utilize two way radios in their cars. A historical marker at Belle Isle describes the new advancement in technology.

The Detroit Police Department has lost 8 officers between the years 2000 and 2011. During the 1970s, the department lost 26 officers in a span of ten years. Since 1878, The Detroit Police Department has lost 225 officers in the line of duty. The leading cause of death in the line of duty is gunfire, with a total of 149 officers slain.

Ella M. Bully-Cummings

Was the first female police chief in department history. Also infamously known for her partaking in leasing a Lincoln Navigator SUV to the Detroit Police motor pool, allowing The Kilpatrick family personal use of the vehicle, in 2005. Costing the Police Department a total of $24,995, (Just under the $25,000 cap that would require approval from city council)

On September 4, 2008, Bully-Cummings announced her retirement minutes after Mayor Kwame Kilpatrick pleaded guilty to two counts of perjury.

Detroit ( /diˈtrɔɪt/) is the largest city in the U.S. state of Michigan, and the seat of Wayne County. It is the major city among the primary cultural, financial, and transportation centers in the Metro Detroit area, a region of 5.2 million people, and serves as a major port on the Detroit River connecting the Great Lakes system to the Saint Lawrence Seaway. It was founded on July 24, 1701, by the French explorer, adventurer, and nobleman Antoine de la Mothe, sieur de Cadillac.

In 2010, the city had a population of 713,777 and ranked as the 18th most populous city in the United States. The name Detroit sometimes refers to the Metro Detroit area with a population of 4,296,250 for the six-county Metropolitan Statistical Area, the United States' eleventh-largest, and a population of 5,218,852 for the nine-county Combined Statistical Area as of the 2010 Census. The Detroit–Windsor area, a critical commercial link straddling the Canada–U.S. border, has a total population of about 5,700,000.

Known as the world's traditional automotive center, "Detroit" is a metonym for the American automobile industry and an important source of popular music legacies celebrated by the city's two familiar nicknames, the Motor City and Motown. Other nicknames arose in the 20th century, including City of Champions beginning in the 1930s for its successes in individual and team sport,The D, D-Town, Hockeytown (a trademark owned by the city's NHL club, the Red Wings), Rock City (after the Kiss song "Detroit Rock City"), and The 313 (its telephone area code) Detroit became known as the "great arsenal of democracy" for its support of the U.S. role among the Allied powers during World War II.