Portola Valley is a town in San Mateo County, California. Located on the San Francisco Peninsula in the Bay Area, Portola Valley is a small, wealthy community nestled on the eastern slopes of the Santa Cruz Mountains. It had a population of 4,456 in 2020.

Foster City is a city located in San Mateo County, California. The 2020 census put the population at 33,805, an increase of more than 10% over the 2010 census figure of 30,567.

South San Francisco is a city in San Mateo County, California, United States, located on the San Francisco Peninsula in the San Francisco Bay Area. The city is colloquially known as "South City". The population was 66,105 at the 2020 census.

Burlingame is a city in San Mateo County, California. It is located on the San Francisco Peninsula and has a significant shoreline on San Francisco Bay. The city is known for its numerous eucalyptus groves, high quality of life, walkable downtown area, and public school system. As of the 2020 census, the city population was 31,386.

Redwood City is a city on the San Francisco Peninsula in Northern California's Bay Area, approximately 27 miles (43 km) south of San Francisco, and 24 miles (39 km) northwest of San Jose. Redwood City's history spans its earliest inhabitation by the Ohlone people to being a port for lumber and other goods. The city's population was 84,292 according to the 2020 census.

Pacifica is a city in San Mateo County, California, on the coast of the Pacific Ocean between San Francisco and Half Moon Bay. The City of Pacifica is spread along a 6-mile (9.7-kilometer) stretch of coastal beaches and hills in north central California. It had a population of 38,640 in 2020.

Moss Beach is a coastal census-designated place in San Mateo County, California, with a year 2020 census population of 3,214. Moss Beach’s undisturbed coastline feels worlds away. Here, you’ll find a vibrant marine reserve teeming with sea life, an historic eatery with killer views and a swashbuckling past, and a stylish, boutique inn plunked on a dramatic coastal bluff.

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. Engulfed by mountains and the Pacific, the cozy coastal community enjoys one of the most dramatically beautiful pockets along the Half Moon Bay Coastside.

Menlo Park is a city at the eastern edge of San Mateo County within the San Francisco Bay Area of California. It is one of the most educated cities in California and the United States; nearly 70% of residents over 25 have earned a bachelor's degree or higher. It had 33,780 residents at the 2020 United States Census.

Belmont is a city in San Mateo County in the U.S. state of California. Known for its wooded hills, views of the San Francisco Bay and stretches of open space, Belmont is a quiet residential community in the midst of the culturally and technologically rich Bay Area. The city was incorporated in 1926. Its population was 28,335 at the 2020 census.