Pleasant Ridge is a city in Oakland County in the U.S. state of Michigan. The population was 2,526 at the 2010 census. Located along the Woodward Corridor and Interstate 696, Pleasant Ridge is a northern suburb of Metro Detroit and is about 1.5 miles (2.4 km) north of the city of Detroit. With a land area of 0.57 square miles (1.48 km2), Pleasant Ridge is the fifth-smallest city by land area in the state of Michigan after the cities of Sylvan Lake, Keego Harbor, Petersburg, and Clarkston.