San Mateo County, officially the County of San Mateo, is a county located in the U.S. state of California. As of the 2020 census, the population was 764,442. Redwood City is the county seat, and the third most populated city following Daly City and San Mateo. San Mateo County is included in the San Francisco-Oakland-Berkeley, CA MSA, Silicon Valley, and is part of the San Francisco Bay Area, the nine counties bordering San Francisco Bay. It covers most of the San Francisco Peninsula. San Francisco International Airport is located in the northeastern area of the county and is approximately 7 miles south of the city and county limits of San Francisco. The county's built-up areas are mostly suburban, and are home to several corporate campuses.
Half Moon Bay is a coastal city in San Mateo County, California, United States, approximately 25 miles (40 km) south of San Francisco. Its population was 11,795 as of the 2020 census. Immediately at the north of Half Moon Bay is Pillar Point Harbor and the unincorporated community of Princeton-by-the-Sea. Half Moon Bay is known for Mavericks, a big-wave surf location. It is called Half Moon Bay because of its crescent shape.
Montara is a census-designated place (CDP) in San Mateo County, California, United States. The population was 2,833 at the 2020 census. Nearby communities include Moss Beach and Princeton-by-the-Sea.
The Santa Cruz Mountains, part of the Pacific Coast Ranges, are a mountain range in central and northern California, United States. They form a ridge down the San Francisco Peninsula, south of San Francisco. They separate the Pacific Ocean from the San Francisco Bay and the Santa Clara Valley, and continue south to the Central Coast, bordering Monterey Bay and ending at the Salinas Valley. The range passes through the counties of San Mateo, Santa Clara, Santa Cruz, San Benito and Monterey, with the Pajaro River forming the southern boundary.
Año Nuevo State Park is a state park of California, United States, encompassing Año Nuevo Island and Año Nuevo Point, which are known for their pinniped rookeries. Located in San Mateo County, the low, rocky, windswept point juts out into the Pacific Ocean about 55 miles (89 km) south of San Francisco and the Golden Gate. Año Nuevo State Natural Reserve, formerly a separate unit of the California state park system, was merged into Año Nuevo State Park in October 2008. The coastal geographic center, or coastal-midpoint of California is located at the Northern end of this park at N 37°09′58″, W 122°21'40", as the absolute geographic center of California falls at N 37°09′58″, W 119°26′58″W.
Mount Diablo is a mountain of the Diablo Range, in Contra Costa County of the eastern San Francisco Bay Area in Northern California. It is south of Clayton and northeast of Danville. It is an isolated upthrust peak of 3,849 feet, visible from most of the San Francisco Bay Area. Mount Diablo appears from many angles to be a double pyramid and has many subsidiary peaks. The largest and closest is North Peak, the other half of the double pyramid, which is nearly as high in elevation at 3,557 feet (1,084 m), and is about one mile northeast of the main summit.
Fitzgerald Marine Reserve is a marine reserve in California on the Pacific Ocean, located just north of Pillar Point Harbor and Mavericks in the San Mateo County community of Moss Beach. Moss Beach is located approximately 20 miles (32 km) south of San Francisco and 50 miles (80 km) north of Santa Cruz. The reserve is a 32-acre (0.13 km2) holding which extends from Montara light station at the north to Pillar Point on the south. The reserve consists of a three-mile stretch of beach, tidepool habitat, marsh, erosive bluffs, clifftop trail and cypress and eucalyptus forests. The property is owned by the State of California and managed by San Mateo County as a county park and nature preserve. The reserve is administratively assigned to be part of the Monterey Bay National Marine Sanctuary. Adjacent to and possibly within the reserve is an endangered species of butterfly, the San Bruno elfin butterfly.
Devil's Slide is a coastal promontory in California, United States. It lies on the San Mateo County coast between Pacifica and Montara. Its name comes from the rocky edges prone to accident.
Half Moon Bay State Beach is a 4-mile (6 km) stretch of protected beaches in the state park system of California, United States, on Half Moon Bay. From north to south it comprises Roosevelt, Dunes, Venice, and Francis Beaches. The 181-acre (73 ha) park was established in 1956.
Potentilla hickmanii is an endangered perennial herb of the rose family. This rare plant species is found in a narrowly restricted range in two locations in coastal northern California, in Monterey County, and in very small colonies in San Mateo County. This small wildflower, endemic to western slopes of the outer coastal range along the Pacific Ocean coast, produces bright yellow blossoms through spring and summer.
San Vicente Creek is a 3.9-mile-long (6.3 km) coastal stream in northern California which flows entirely within San Mateo County and discharges to the Pacific Ocean. Its waters rise on the west facing slopes of the Montara Mountain, block and its mouth is at the unincorporated community of Moss Beach, within the Fitzgerald Marine Reserve. Historically there was a tidal marsh at its mouth, but some of this reach has been degraded by fill, especially in the construction of West Point Drive. This westernmost reach of the creek has been especially ecologically productive, and part of the reason for Fitzgerald Marine Reserve's designation on August 5, 1969, as a state reserve and was named after James V. Fitzgerald.
Montara State Beach is a beach located in the coastal region of the U.S. state of California, eight miles north of Half Moon Bay on State Route 1. It is operated by the California State Department of Parks and Recreation under the San Mateo Coast Sector Office. It is one of the cleanest beaches in the state and is known for surfing and fishing.
The Point Montara Light is a lighthouse in Montara, California, United States, on the southern approach to the San Francisco Bay, California approximately 25 miles south of San Francisco.
Pedro Mountain Road describes a series of historical road crossings of Pedro Mountain, a promontory ridge located between Montara Mountain and the coastal cliffs of Devil's Slide in San Mateo County, California. This Pedro Mountain headland blocks the easy passage of coastal travelers between the Pedro Valley in Pacifica, California and Montara, California. The most prominent of these Pedro Mountain roads was Coastside Boulevard, the 1914 to 1937 coastal highway 57, which remains in use today as part of the trail network of McNee Ranch State Park.
Montara Mountain, positioned between the unincorporated community of Montara, California, to the southwest and the city of Pacifica, California, to the north, forms the northern spur of the Santa Cruz Mountains, a narrow mountain range running the length of the San Francisco Peninsula that separates San Francisco Bay from the Pacific Ocean. Its highest point rises to 1,898 feet (579 m) above sea level. An unpaved fire road, the North Peak Access Road, accessible from the Pedro Mountain Road in McNee Ranch State Park, provides access to the summit by hikers from the south. From the north, Montara Mountain Trail, Hazelnut Trail and Brooks Creek Trail provide access to the mountain with trailheads in San Pedro Valley County Park.
Pilarcitos Creek is a 13.5-mile-long (21.7 km) coastal stream in San Mateo County, California, United States, that rises on the western slopes of the Santa Cruz Mountains and descends through Pilarcitos Canyon to discharge into the Pacific Ocean Half Moon Bay State Beach.
Wilder Ranch State Park is a California State Park on the Pacific Ocean coast north of Santa Cruz, California. The park was formerly a dairy ranch, and many of the ranch buildings have been restored for use as a museum. There are no campgrounds; a day-use parking lot provides access to the museum. Dogs are prohibited on the trails, but many trails allow bikes and/or horses. The long trails and ocean views make the area a favorite of hikers, equestrians and mountain bikers. Public beaches continue to the north in Coast Dairies State Park.
Gray Whale Cove State Beach is a California State Park between Pacifica, California, and Montara, California, by Highway 1 and approximately 18 miles south of San Francisco. It features a sheltered cove surrounded by abrupt cliffs, with trails connecting to nearby Montara Mountain and McNee Ranch State Park. It is located just south of Devil's Slide. The 3.1-acre (1.3 ha) park was established in 1966.
Rancho Corral de Tierra was a 7,766-acre (31.43 km2) Mexican land grant in present-day coastal western San Mateo County, northern California.
The Tom Lantos Tunnels are two tunnels located within the coastal promontory of Montara Mountain, on the San Francisco Peninsula in California, United States, created to allow rerouting State Route 1 to avoid a portion of roadway known as Devil's Slide. They are officially named after late Congressman Tom Lantos, who was instrumental in securing funding for the project, but de facto named after their location.
