Contra Costa County is a county located in the U.S. state of California, in the East Bay of the San Francisco Bay Area. As of the 2020 United States Census, the population was 1,165,927. The county seat is Martinez. It occupies the northern portion of the East Bay region of the San Francisco Bay Area and is primarily suburban. The county's name refers to its position on the other side of the bay from San Francisco. Contra Costa County is included in the San Francisco–Oakland–Berkeley, CA Metropolitan Statistical Area.
Dublin is a suburban city of the East Bay in California. It is located within the Amador Valley of Alameda County's Tri-Valley region. It is located along the north side of Interstate 580 at the intersection with Interstate 680, roughly 35 miles (56 km) east of downtown San Francisco, 23 miles (37 km) east of downtown Oakland, and 31 miles (50 km) north of downtown San Jose.
Alamo is an unincorporated community and census-designated place (CDP) in Contra Costa County, California, in the United States. It is a suburb located in the San Francisco Bay Area's East Bay region, approximately 28 miles (45 km) east of San Francisco. Alamo is equidistant from the city of Walnut Creek and the incorporated town of Danville. As of the 2010 census, the population was 14,750.
San Ramon is a city in Contra Costa County, California, United States, located within the San Ramon Valley, and 34 miles (55 km) east of San Francisco. San Ramon's population was 84,605 per the 2020 census, making it the 4th largest city in Contra Costa County, behind Richmond, Concord and Antioch.
Walnut Creek is a city in Contra Costa County, California, United States, located in the East Bay region of the San Francisco Bay Area, about 16 miles east of the city of Oakland. Walnut Creek has a total population of 70,127 per the 2020 census, is located at the junction of the highways from Sacramento and San Jose (I-680) and San Francisco/Oakland (SR-24), and is accessible by BART. The city shares its borders with Clayton, Lafayette, Alamo, Pleasant Hill, and Concord.
The Tri-Valley area is grouping of three valleys in the East Bay region of California's Bay Area. The three valleys are Amador Valley, San Ramon Valley, and Livermore Valley. The Tri-Valley encompasses the cities of Dublin, Livermore, Pleasanton and San Ramon, the town of Danville and the CDPs of Alamo, Blackhawk and Diablo. The area is known for its Mediterranean climate, wineries, and nature. It is primarily suburban in character. The United States Census Bureau defines an urban area centered in the cities of Livermore, Pleasanton, and Dublin with a 2020 population of 240,381, ranked 167th in the United States in terms of population. The total population of the area is estimated to be 361,000. It offers more affordable living accommodations than the cities of San Francisco and San Jose.
The County Connection is a Concord-based public transit agency operating fixed-route bus and ADA paratransit service in and around central Contra Costa County in the San Francisco Bay Area. Established in 1980 as a joint powers authority, CCCTA assumed control of public bus service within central Contra Costa first begun by Oakland-based AC Transit as it expanded into suburban Contra Costa County in the mid-1970s. In 2022, the system had a ridership of 2,226,500, or about 8,900 per weekday as of the first quarter of 2023.
Warner Center is a master-planned neighborhood and business district development in the Canoga Park and Woodland Hills neighborhoods of the San Fernando Valley in Los Angeles, California.
Dublin/Pleasanton station is a Bay Area Rapid Transit (BART) station on the border of Dublin and Pleasanton in California. It is the eastern terminus of the Blue Line. It is also a major bus terminal served by six providers.
Sierra Point is a small artificial peninsula that extends eastward into the San Francisco Bay from the eastern shore of the San Francisco Peninsula, located in Brisbane, San Mateo County, California. It lies entirely east of U.S. Route 101. There are several class A office buildings at Sierra Point including the Dakin Building and the former Hitachi building. The Brisbane Marina is on the eastern shore of Sierra Point. The San Francisco Bay Trail runs along the waterfront of the peninsula and continues south into the Oyster Point area of South San Francisco.
The San Ramon Valley Unified School District (SRVUSD) is a public school district in Contra Costa County, California. It has 36 school sites serving more than 32,000 students within the communities of Alamo, Danville, Blackhawk, Diablo, and San Ramon. It was founded in 1964.
Briones Regional Park is a 6,117-acre (24.75 km2) regional park in the East Bay Regional Park District (EBRPD) system, located in the Briones Hills of central Contra Costa County of the San Francisco Bay Area in California.
Bishop Ranch Regional Preserve (BRRP), also known as Bishop Ranch Regional Open Space Preserve is a 444-acre (1.80 km2) regional park on a ridge top at the edge of San Ramon, California. It is near a residential area, west of San Ramon Valley Road and south of Bollinger Canyon Road. Trails are steep and there are no facilities other than a trailhead. It is part of the East Bay Regional Park District (EBRPD).
Thomas Benton Bishop was a well-known and successful San Francisco attorney.
Rancho San Ramon was a 20,968-acre (84.85 km2) Mexican land grant in the southern San Ramon Valley of present-day Contra Costa County, California. Rancho San Ramon (Pacheco-Castro) was adjacent in the northern San Ramon Valley.
The Old Baldy Council (#043) was founded in 1917 as the Pomona Council. It changed its name in 1921 to Old Baldy. The Old Baldy name is from Mount San Antonio, often called "Old Baldy" or "Mount Baldy", the highest peak in the San Gabriel Mountains.
Dublin Hills Regional Park covers 654 acres (2,650,000 m2) in Alameda County, California, United States, west of the city of Dublin. It is part of the East Bay Regional Park District (EBRPD). The park is accessible from the Donlon Hill Staging Area, which is on Dublin Boulevard near Dublin, California.
