Los Altos (/lɔːs ˈæltoʊs/ (listen)) is a city in Santa Clara County, California, in northern Silicon Valley, in the San Francisco Bay Area.  In 1913, the craftsman-style Los Altos train station was built at 288 First Street. 2,086 households (19.4%) were made up of individuals, and 1,228 (11.4%) had someone living alone who was 65 years of age or older. The average household size was 2.68. The ACS adheres to definitions of race and ethnicity set forth by the 1997 Office of Management and Budget (OMB) standards.  Los Altos may have a legitimate claim to having the first scientifically designed sound baffle in the year 1970. Los Altos means "the heights" in Spanish. As of the census of 2000, there were 27,693 people, 10,462 households, and 8,024 families residing in the city. For every 100 females, there were 93.1 males. The last official US Census in 2010 recorded the population at 28,976 . Population estimates, July 1, 2018, (V2018) 30,531. Most of the city's growth occurred between 1950 and 1980. In 1908, Southern Pacific Railroad began running steam train service through Los Altos (April 19, 1908) with five trains per day. Full demographic report of Los Altos, CA population including education levels, household income, job market, ethnic makeup, and languages. QuickFacts provides statistics for all states and counties, and for cities and towns with a population of 5,000 or more. , In the United States House of Representatives, Los Altos is in California's 18th congressional district, represented by Democrat Anna Eshoo.. See population statistics in Los Altos, [state:undefined], from the U.S. Census Bureau's American Community Survey. 18.7% were singles including 9.8% 65 or older. There were 11,204 housing units at an average density of 1727.1 per square mile (666.9/km2), of which 9,002 (83.8%) were owner-occupied, and 1,743 (16.2%) were occupied by renters. Paul Shoup, an executive of the Southern Pacific Railroad, and his colleagues formed the Altos Land Company in 1906 and started the development of Los Altos. Earthquake activity: Los Altos Hills-area historical earthquake activity is near California state average. Los Altos has few sidewalks except in commercial zones and along arterial roads. Many Los Altos homes fetch $2 million and higher, putting the city (along with neighboring Los Altos Hills, with which it shares ZIP codes) at numbers 24 and 28 on Forbes' "Most Expensive ZIP Codes in America" list in 2007. Los Altos is near the San Andreas Fault and subject to earthquakes. Revitalizing downtown is a major issue in city politics.. The population density was 4269 people per square mile (1648.3/km2). , Since the mid-1990s, downtown Los Altos has experienced mild economic difficulties due to competition from nearby shopping centers and chain stores, as well as its lack of a hotel or movie theater. Los Altos became the eleventh city in Santa Clara county on December 1, 1952. The largest demographic living in poverty are N/A N/A, followed by N/A N/A and then N/A N/A. The population was 28,976 according to the 2010 census. , Adobe Creek flows through Redwood Grove, a 5.9-acre (2.4 ha) nature preserve off University Avenue in Los Altos purchased by the city in 1974. , In 2004, landlord Judy Fusco rented her Los Altos home, later known as 'Casa Facebook', to Mark Zuckerberg where he and a few other associates scaled Facebook from 200,000 members to 2.5 million.. Hale Creek is tributary to Permanente Creek, and Permanente Creek is now largely diverted to Stevens Creek by a diversion channel. Train service stopped its operation in January 1964, and the train track became Foothill Expressway. , Steelhead trout (Oncorhynchus mykiss) occurred historically in Adobe Creek. The company acquired 140 acres of land from Sarah Winchester. Los Altos has a variety of youth-oriented sports organizations, programs, and after-school activities. Some examples: The Los Altos Town Crier, a weekly, is the primary newspaper for the town, "serving the Hometown of Silicon Valley since 1947. All Topics Population Age and Sex Race and Hispanic Origin Population Characteristics Housing Families & Living Arrangements Computer and Internet Use Education Health Economy Transportation Income & Poverty Businesses Geography.