Location of Waller, Washington
|• Total||9.2 sq mi (23.9 km2)|
|• Land||9.2 sq mi (23.9 km2)|
|• Water||0.0 sq mi (0.1 km2)|
|Elevation||390 ft (119 m)|
|• Density||999.0/sq mi (385.7/km2)|
|Time zone||UTC-8 (Pacific (PST))|
|• Summer (DST)||UTC-7 (PDT)|
|GNIS feature ID||1867640|
Waller is located at (47.204286, -122.367698).
According to the United States Census Bureau, the CDP has a total area of 9.2 square miles (24.0 km²), of which, 9.2 square miles (23.9 km²) of it is land and 0.04 square miles (0.1 km²) of it (0.43%) is water.
As of the census of 2000, there were 9,200 people, 3,585 households, and 2,505 families residing in the CDP. The population density was 999.0 people per square mile (385.7/km²). There were 3,772 housing units at an average density of 409.6/sq mi (158.1/km²). The racial makeup of the CDP was 89.00% White, 1.53% African American, 2.07% Native American, 2.09% Asian, 0.16% Pacific Islander, 1.82% from other races, and 3.34% from two or more races. Hispanic or Latino of any race were 4.33% of the population.
There were 3,585 households out of which 30.2% had children under the age of 18 living with them, 57.4% were married couples living together, 8.5% had a female householder with no husband present, and 30.1% were non-families. 24.0% of all households were made up of individuals and 10.4% had someone living alone who was 65 years of age or older. The average household size was 2.55 and the average family size was 3.04.
In the CDP, the age distribution of the population shows 24.4% under the age of 18, 7.1% from 18 to 24, 26.9% from 25 to 44, 28.0% from 45 to 64, and 13.6% who were 65 years of age or older. The median age was 40 years. For every 100 females, there were 97.9 males. For every 100 females age 18 and over, there were 96.8 males.
The median income for a household in the CDP was $47,350, and the median income for a family was $56,164. Males had a median income of $41,471 versus $28,816 for females. The per capita income for the CDP was $21,259. About 5.5% of families and 8.2% of the population were below the poverty line, including 10.9% of those under age 18 and 7.0% of those age 65 or over.