Luna Pier is a small city in Monroe County of the U.S. state of Michigan. It is located 6 miles 9.7 square kilometers from the Ohio border along the coast of Lake Erie. It was established in the early 1900s and incorporated as a city in 1963. It functioned primarily as a resort for people living in the greater Toledo, Ohio and Metro Detroit area. According to the United States Census Bureau, the city has a total area of 1.7 square miles 4.4 square kilometers, of which, 1.5 square miles 3.9 square kilometers of it is land and 0.2 square miles 0.52 square kilometers of it (9.36%) is water.