|— CDP —|
|Blake Garden, Kensington|
|Contra Costa County and the state of California|
|• County Board||District 1:
|• State Senate||Loni Hancock (D)|
|• State Assembly||Nancy Skinner (D)|
|• U. S. Congress||George Miller (D)|
|• Total||0.956 sq mi (2.477 km2)|
|• Land||0.947 sq mi (2.453 km2)|
|• Water||0.009 sq mi (0.024 km2) 0.97%|
|Elevation||587 ft (179 m)|
|• Density||5,361.1/sq mi (2,069.7/km2)|
|Time zone||PST (UTC-8)|
|• Summer (DST)||PDT (UTC-7)|
|ZIP codes||94707, 94708|
|GNIS feature IDs||1658891, 2408472|
Kensington is an unincorporated community and census-designated place located in the East Bay, part of the San Francisco Bay Area, in Contra Costa County, California, United States. The population was 5,077 at the 2010 census.
Law and government 
Kensington is an unincorporated area of Contra Costa County that borders Alameda County. Unlike many unincorporated communities, Kensington has local jurisdiction over its police department, park services, refuse collection and fire department. These are governed by two elected boards. The five-member Kensington Police Protection and Community Services District (KPPCSD) Board oversees the police department, park services, and refuse collection. The KPPCSD is also responsible for maintaining the public stairways and paths in Kensington. The five-member Kensington Fire District Board oversees the fire department and emergency medical services, of which the day-to-day function is outsourced to the fire department of El Cerrito, a neighboring city. The Kensington Municipal Advisory Board (KMAC) is a commission whose members are appointed by the Contra Costa County Board of Supervisors. KMAC is charged with land-use and development review and provides recommendations to the county planning and public works departments.
The sewer system is maintained by the Stege Sanitary District, which also includes the city of El Cerrito and the Richmond Annex area of Richmond. The East Bay Municipal Utility District supplies water and wastewater treatment services. AC Transit operates local transit service. The house numbers on streets follow the pattern used in Berkeley and Albany and mail service is provided by the Berkeley post office.
The area that is now Kensington was originally the territory of the Huichin band of the Ohlone indigenous people who occupied much of the East Bay of the San Francisco Bay Area. The Pedro Fages mapping expedition passed through the area in 1772.
In 1823, the Republic of Mexico granted Rancho San Pablo, an extent of land lying north of Cerrito Creek and the Rancho San Antonio, including that portion of land that is now Kensington, to Francisco María Castro, a veteran of the Mexican Army and former alcalde of San José. In 1831 his youngest son, Victor Castro, inherited the southern portion of the rancho, including what is now Kensington.
In 1892, Anson Blake purchased a portion of Castro's land, most of which is now Kensington.
In 1901, George Shima bought ten acres north of Cerrito Creek and east of the present day Arlington Avenue, intending to build a home there. He hosted an annual community picnic on the property for some time.
Land development companies had bought most of the Kensington area by 1911, when it was first surveyed. The area was named "Kensington" that year by Robert Brousefield, a surveyor who had lived in the London borough of South Kensington at one time.
Farmers in Kensington resisted inclusion in the city of El Cerrito when it was incorporated in 1917, and local voters have rejected incorporation various times since then.
In the 1920s, the East Bay Municipal Utility District (EBMUD) constructed an aqueduct through the Berkeley Hills to transport water from the San Pablo Reservoir to a still-active pumping facility in Kensington, located just above the Colusa Circle. Some of the water received by this facility is pumped up the hill to the Summit Reservoir located at the top of Spruce Street. The rest is pumped to other reservoirs serving the East Bay.
The population of Kensington was 226 in 1920, 1,423 in 1930, 3,355 in 1940, and reached a peak of 6,601 in 1950.
Until 1948, streetcar line #7 of the Key System ran to Kensington from Berkeley along Arlington Avenue, terminating in the small commercial area at Amherst Avenue. The streetcar was then replaced by an AC Transit bus route of the same name which continues to run along Arlington Avenue. The streetcar service played an important role in the development of Kensington, and was fed by a network of mid-block pedestrian paths, most of which persist to this day.
The late local historian Louis Stein Jr. lived and worked in Kensington, maintaining a pharmacy on the corner of Amherst and Arlington Avenue. For many years, he kept one of the East Bay's oldest horsecars in his yard—one that had probably seen service between Temescal, Oakland and the University of California in Berkeley. The horsecar is now at the Western Railway Museum.
According to the United States Census Bureau, the CDP has a total area of 1.0 square mile (2.6 km2), of which, 99% is land 1% is water.
Kensington is largely residential, with two small shopping districts. One of these is located on Arlington Avenue, the other centered on the Colusa Circle.
The 2010 United States Census reported that 5,077 people, 2,199 households, and 1,417 families resided in the CDP. The population density was 5,361.1 people per square mile (2,069.7/km²). There were 2,305 housing units at an average density of 2,409.7 per square mile (930.4/km²). The racial makeup of the CDP was 78.1% White (74.8% non-Hispanic), 2.6% African American (2.5% non-Hispanic), 0.3% Native American, 12.0% Asian, 1.1% from other races, and 5.9% from two or more races. 5.2% of the population was Hispanic or Latino of any race.
The Census reported that 100% of the population lived in households.
There were 2,199 households out of which 25.8% had children under the age of 18 living in them, 54.9% were opposite-sex married couples living together, 7.0% had a female householder with no husband present, and 2.5% had a male householder with no wife present. 4.1% of households were unmarried opposite-sex partnerships and 2.0% were same-sex married couples or partnerships. 26.6% were made up of individuals and 12.5% had someone living alone who was 65 years of age or older. The average household size was 2.31 and the average family size was 2.76.
The population was spread out with 18.4% under the age of 18, 3.2% aged 18 to 24, 20.9% aged 25 to 44, 35.2% aged 45 to 64, and 22.2% who were 65 years of age or older. The median age was 49.5 years. For every 100 females there were 89.7 males. For every 100 females age 18 and over, there were 88.7 males.
There were 2,305 housing units of which 82.9% were owner-occupied and 17.1% were occupied by renters. The homeowner vacancy rate was 1.1%; the rental vacancy rate was 5.0%. 83.8% of the population lived in owner-occupied housing units and 16.2% lived in rental housing units.
As of the census of 2000, there were 4,936 people, 2,192 households, and 1,372 families residing in the CDP. The population density was 4,301.9 people per square mile (1,657.2/km²). There were 2,245 housing units at an average density of 1,956.6 per square mile (753.7/km²). The racial makeup of the CDP was 81.77% White, 2.55% Black or African American, 0.24% Native American, 10.58% Asian, 0.02% Pacific Islander, 0.91% from other races, and 3.93% from two or more races. 3.48% of the population were Hispanic or Latino of any race.
There were 2,192 households out of which 23.8% had children under the age of 18 living with them, 53.5% were married couples living together, 6.6% had a female householder with no husband present, and 37.4% were non-families. 26.7% of all households were made up of individuals and 12.5% had someone living alone who was 65 years of age or older. The average household size was 2.25 and the average family size was 2.69.
In the CDP the population was spread out with 17.7% under the age of 18, 3.1% from 18 to 24, 25.4% from 25 to 44, 31.7% from 45 to 64, and 22.1% who were 65 years of age or older. The median age was 47 years. For every 100 females there were 89.9 males. For every 100 females age 18 and over, there were 89.3 males.
The median income for a household in the CDP was $93,247, and the median income for a family was $102,601. Males had a median income of $71,278 versus $55,347 for females. The per capita income for the CDP was $55,275. About 1.7% of families and 3.3% of the population were below the poverty line, including 3.0% of those under age 18 and 3.8% of those age 65 or over.
The Kensington Branch Library of the Contra Costa County Library enjoys one of the highest circulation per capita rates of any Contra Costa County Library. Kensington Hilltop Elementary School serves to educate Kindergarten to 6th grade. The two churches house various independent elementary and preschools.
Religious institutions 
There are two churches in Kensington, Arlington Community Church (United Church of Christ), completed and dedicated in 1948, and the Unitarian Universalist Church of Berkeley, which in 1961 moved from its original home in Berkeley to land in Kensington purchased from church member and architect Bernard Maybeck. There is also a Carmelite monastery adjacent to Blake Garden.
Points of interest 
- "Senators". State of California. Retrieved March 30, 2013.
- "Members Assembly". State of California. Retrieved March 30, 2013.
- "California's 11th Congressional District - Representatives & District Map". Civic Impulse, LLC. Retrieved March 9, 2013.
- U.S. Census
- "Kensington". Geographic Names Information System, U.S. Geological Survey.
- Kensington Improvement Club, ed. (2000). Kensington Past and Present. Woodford Press. ISBN 978-0-942627-76-3.
- Durham, David L. (1998). California's Geographic Names: A Gazetteer of Historic and Modern Names of the State. Quill Driver Books. p. 648. ISBN 9781884995149.
- "Contra Costa County Historical Society".
- All data are derived from the United States Census Bureau reports from the 2010 United States Census, and are accessible on-line here. The data on unmarried partnerships and same-sex married couples are from the Census report DEC_10_SF1_PCT15. All other housing and population data are from Census report DEC_10_DP_DPDP1. Both reports are viewable online or downloadable in a zip file containing a comma-delimited data file. The area data, from which densities are calculated, are available on-line here. Percentage totals may not add to 100% due to rounding. The Census Bureau defines families as a household containing one or more people related to the householder by birth, opposite-sex marriage, or adoption. People living in group quarters are tabulated by the Census Bureau as neither owners nor renters. For further details, see the text files accompanying the data files containing the Census reports mentioned above.
- "American FactFinder". United States Census Bureau. Retrieved 2008-01-31.
- "Kensington, California." U.S. Census Bureau. Retrieved on April 1, 2010.
- About Kensington portal website
- Kensington Fire Protection District
- Kensington Library
- Kensington Police Protection & Community Services District (KPPCSD)
- Open Directory Kensington, CA additional locality links