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Discovery Bay

Discovery Bay is a census-designated place (CDP) in extreme eastern Contra Costa County, California in the United States about 60 miles (97 km) from San Francisco. As of 2010, its population was 13,352.

Discovery Bay is based on a waterfront community of 3,500+ homes with private docks with access to the Sacramento-San Joaquin River Delta. Discovery Bay has added Discovery Bay West, which consists of gated and non-gated “off-water” communities with homes from 1,400 square feet (130 m2) up to 4,700 square feet (440 m2).


The community of Discovery Bay has a short history. It was begun as a planned community in 1964, and originally designated as “Riverside” and “River Lake.” It was built on land known as the Byron Tract, which was previously used for growing barley and potatoes. In 1968, Jurgen Lunding led an effort to give the community its current name.

In July 2007, Discovery Bay celebrated its maturity into its own community by changing the ZIP code from 94514 (which it had shared with the neighboring community of Byron) to 94505. A huge town celebration ensued with a world record-setting paddle boat raft-up.


The 2010 United States Census[3] reported that Discovery Bay had a population of 13,352. The population density was 1,896.7 people per square mile (732.3/km²). The racial makeup of Discovery Bay was 10,909 (81.7%) White, 550 (4.1%) African American, 86 (0.6%) Native American, 522 (3.9%) Asian, 51 (0.4%) Pacific Islander, 468 (3.5%) from other races, and 766 (5.7%) from two or more races. Hispanic or Latino of any race were 2,074 persons (15.5%).

The Census reported that 13,315 people (99.7% of the population) lived in households, 37 (0.3%) lived in non-institutionalized group quarters, and 0 (0%) were institutionalized.

There were 4,702 households, out of which 1,879 (40.0%) had children under the age of 18 living in them, 3,133 (66.6%) were opposite-sex married couples living together, 369 (7.8%) had a female householder with no husband present, 231 (4.9%) had a male householder with no wife present. There were 297 (6.3%) unmarried opposite-sex partnerships, and 42 (0.9%) same-sex married couples or partnerships. 686 households (14.6%) were made up of individuals and 193 (4.1%) had someone living alone who was 65 years of age or older. The average household size was 2.83. There were 3,733 families (79.4% of all households); the average family size was 3.12.

The population was spread out with 3,588 people (26.9%) under the age of 18, 837 people (6.3%) aged 18 to 24, 3,571 people (26.7%) aged 25 to 44, 3,871 people (29.0%) aged 45 to 64, and 1,485 people (11.1%) who were 65 years of age or older. The median age was 39.6 years. For every 100 females there were 101.0 males. For every 100 females age 18 and over, there were 100.1 males.

There were 5,403 housing units at an average density of 767.5 per square mile (296.3/km²), of which 3,873 (82.4%) were owner-occupied, and 829 (17.6%) were occupied by renters. The homeowner vacancy rate was 3.4%; the rental vacancy rate was 6.3%. 10,578 people (79.2% of the population) lived in owner-occupied housing units and 2,737 people (20.5%) lived in rental housing units.