Bonney Lake is a city in Pierce County, Washington, United States. The population was 17,374 at the 2010 census.
Bonney Lake was incorporated as a town on February 28, 1949, after the establishment of a co-op venture to bring electricity and tap water service to local residents. Several unsuccessful attempts were made to dis-incorporate the town from 1952 to 1972.
The Sumner Grade Fire, ignited in early September 2020, forced the evacuation of an estimated 2,500 residences.
Bonney Lake is located at 47°11′13″N 122°10′12″W (47.187019, −122.170035).
According to the United States Census Bureau, the city has a total area of 8.01 square miles (20.75 km2), of which, 7.94 square miles (20.56 km2) is land and 0.07 square miles (0.18 km2) is water.
As of the census of 2010, there were 17,374 people living in Bonney Lake. There were 5,989 households and 4,632 families living in the city. The population density was 2,188.2 inhabitants per square mile (844.9/km2). There were 6,394 housing units at an average density of 805.3 per square mile (310.9/km2). The racial makeup of the city was 88.6% White, 1.1% African American, .8% Native American, 2.4% Asian, 0.5% Pacific Islander, 1.8% from other races, and 4.5% from two or more races. Hispanic or Latino of any race were 6.1% of the population.
There were 5,989 households, of which 44.5% had children under the age of 18 living with them, 61.0% were married couples living together, 10.1% had a female householder with no husband present, 6.3% had a male householder with no wife present, and 22.7% were non-families.