Gibraltar is a city in Wayne County in the U.S. state of Michigan. The population was 4,264 at the 2000 census. It's located on the Detroit River directly south of, and adjacent to, Trenton.
According to the United States Census Bureau, the city has a total area of 4.3 square miles (11.2 km²), of which, 3.8 square miles (9.9 km²) of it is land and 0.5 square miles (1.3 km²) of it (11.52%) is water.
As of the census of 2000, there were 4,264 people, 1,728 households, and 1,225 families residing in the city. The population density was 1,109.1 per square mile (428.7/km²). There were 1,791 housing units at an average density of 465.9 per square mile (180.1/km²). The racial makeup of the city was 96.74% White, 0.52% African American, 0.33% Native American, 0.40% Asian, 0.59% from other races, and 1.43% from two or more races. Hispanic or Latino of any race were 1.83% of the population.