Lincoln Park is a city in Wayne County in the U.S. state of Michigan. The population was 38,144 at the 2010 census, down from 40,008 at the 2000 census. With a population density of 6,476.1/sq mi (2,500.4/km2) at the 2010 census, Lincoln Park is the second most-densely populated municipality in the state after Hamtramck.

Wayne County is the most populous county in the U.S. state of Michigan. As of 2020, the United States Census placed its population at 1,793,561, making it the 19th-most populous county in the United States. The county seat is Detroit. The county was founded in 1796 and organized in 1815. Wayne County is included in the Detroit-Warren-Dearborn, MI Metropolitan Statistical Area. It is one of several U.S. counties named after Revolutionary War-era general Anthony Wayne.