Graham is a census-designated place (CDP) in Pierce County, Washington, United States. The population was 8,739 at the 2000 census and grew to 23,491 at the 2010 census.
According to the United States Census Bureau, the CDP has a total area of 21.4 square miles (55.5 km2), all of it land.
As of the census of 2000, there were 8,739 people, 2,989 households, and 2,427 families residing in the CDP. The population density was 407.9 people per square mile (157.5/km2). There were 3,120 housing units at an average density of 145.6/sq mi (56.2/km2). The racial makeup of the CDP was 90.15% White, 1.28% African American, 1.28% Native American, 1.80% Asian, 0.50% Pacific Islander, 0.98% from other races, and 4.01% from two or more races. Hispanic or Latino of any race were 2.81% of the population.
There were 2,989 households, out of which 42.5% had children under the age of 18 living with them, 68.8% were married couples living together, 7.7% had a female householder with no husband present, and 18.8% were non-families. 14.3% of all households were made up of individuals, and 3.7% had someone living alone who was 65 years of age or older. The average household size was 2.92 and the average family size was 3.20.
In the CDP, the population was spread out, with 30.3% under the age of 18, 6.7% from 18 to 24, 32.5% from 25 to 44, 24.1% from 45 to 64, and 6.4% who were 65 years of age or older.