Kentwood is a city in Kent County in the U.S. state of Michigan. The population was 48,707 as of the 2010 census.
According to the United States Census Bureau, the city has a total area of 20.95 square miles (54.26 km), of which, 20.90 square miles (54.13 km) is land and 0.05 square miles (0.13 km) is water. The city is bordered by Wyoming to the west, Grand Rapids and Grand Rapids Township to the north, Cascade Township to the east, and Gaines Township to the south.
As of the census of 2010, there were 48,707 people, 19,741 households, and 12,345 families residing in the city. The population density was 2,330.5 inhabitants per square mile (899.8/km). There were 21,584 housing units at an average density of 1,032.7 per square mile (398.7/km). The racial makeup of the city was 70.1% White, 15.4% African American, 0.4% Native American, 6.6% Asian, 0.1% Pacific Islander, 3.5% from other races, and 3.9% from two or more races. Hispanic or Latino of any race were 8.5% of the population.
There were 19,741 households of which 32.9% had children under the age of 18 living with them, 45.3% were married couples living together, 13.1% had a female householder with no husband present, 4.1% had a male householder with no wife present, and 37.5% were non-families. 30.9% of all households were made up of individuals and 10.3% had someone living alone who was 65 years of age or older. The average household size was 2.45 and the average family size was 3.10.
The median age in the city was 34.3 years. 25.4% of residents were under the age of 18; 9.8% were between the ages of 18 and 24; 28.8% were from 25 to 44; 24.3% were from 45 to 64; and 11.5% were 65 years of age or older. The gender makeup of the city was 48.0% male and 52.0% female.
As of 2000 the median income for a household in the city was $48,335, and the median income for a family was $60,391. The per capita income for the city was $24,261. About 9.8% of families and 12.2% of the population were below the poverty line, including 16.8% of those under age 18 and 7.6% of those age 65 or over.