Flat Rock is a city in Wayne County of the U.S. state of Michigan. A very small portion of the city extends into Monroe County. At the 2010 census, the city population was 9,878. Flat Rock is home to the Flat Rock Assembly Plant, owned by Ford Motor Company. As of 2018 it produces the 6th generation Ford Mustang and the Lincoln Continental.
According to the United States Census Bureau, the city has a total area of 6.67 square miles (17.28 km), of which 6.53 square miles (16.91 km) is land and 0.14 square miles (0.36 km) is water. The city is primarily within Wayne County, but a portion of the city lies in Monroe County, because the border along the Huron River follows the course of the river in 1923, the year Flat Rock was incorporated as a village. At the time, the river had two meanders, but they have since been filled in.
Flat Rock has a higher overall tornado average than the state of Michigan as a whole, and a 66% greater average than the United States as a whole. Two F4 tornadoes have hit Flat Rock—one in 1956 and another in 1965 resulting in 23 deaths and over 300 injuries.
As of the census of 2010, there were 9,878 people, 3,754 households, and 2,684 families residing in the city. The population density was 1,512.7 inhabitants per square mile (584.1/km). There were 3,995 housing units at an average density of 611.8 per square mile (236.2/km). The racial makeup of the city was 91.1% White, 4.1% African American, 0.5% Native American, 0.8% Asian, 0.6% from other races, and 2.9% from two or more races. Hispanic or Latino of any race were 4.4% of the population.
There were 3,754 households of which 38.9% had children under the age of 18 living with them, 49.8% were married couples living together, 16.6% had a female householder with no husband present, 5.1% had a male householder with no wife present, and 28.5% were non-families. 23.6% of all households were made up of individuals and 8.1% had someone living alone who was 65 years of age or older. The average household size was 2.62 and the average family size was 3.10.
The median age in the city was 36.9 years. 27.4% of residents were under the age of 18; 8.4% were between the ages of 18 and 24; 26.6% were from 25 to 44; 27.1% were from 45 to 64; and 10.4% were 65 years of age or older. The gender makeup of the city was 48.1% male and 51.9% female.
As of the census of 2000, there were 8,488 people, 3,181 households, and 2,306 families residing in the city. The population density was 1,266.9 per square mile (489.1/km²). There were 3,291 housing units at an average density of 491.2 per square mile (189.7/km²). The racial makeup of the city was 95.32% White, 1.43% African American, 0.49% Native American, 0.47% Asian, 0.64% from other races, and 1.65% from two or more races. Hispanic or Latino of any race were 2.70% of the population.
There were 3,181 households out of which 39.8% had children under the age of 18 living with them, 51.7% were married couples living together, 16.6% had a female householder with no husband present, and 27.5% were non-families. 22.9% of all households were made up of individuals and 8.6% had someone living alone who was 65 years of age or older. The average household size was 2.66 and the average family size was 3.12.
In the city, the population was spread out with 29.3% under the age of 18, 10.1% from 18 to 24, 30.3% from 25 to 44, 20.8% from 45 to 64, and 9.5% who were 65 years of age or older. The median age was 33 years. For every 100 females, there were 93.9 males. For every 100 females age 18 and over, there were 87.7 males.
The median income for a household in the city was $44,084, and the median income for a family was $54,186. Males had a median income of $43,967 versus $27,348 for females. The per capita income for the city was $21,256. About 8.5% of families and 8.8% of the population were below the poverty line, including 11.3% of those under age 18 and 4.8% of those age 65 or over.
Flat Rock Michigan neighborhoods include: Bridgewater, Claremont, Country Meadows Society, Flat Rock, Oakwood Farms Plus, Tanglewood