Los Altos is a city in Santa Clara County, California, in northern Silicon Valley, in the San Francisco Bay Area. The population was 28,976 according to the 2010 census.
Most of the city’s growth occurred between 1950 and 1980. Originally an agricultural town with many summer cottages and apricot orchards, Los Altos is now an affluent commuter town for Silicon Valley. Los Altos has several distinctive features. Commercial zones are strictly limited to the downtown area and small shopping and office parks lining Foothill Expressway and El Camino Real.
Homes and other real estate are costly in Los Altos. The median household income of Los Altos for 2006–2010 was $149,964. The average home listing price in 2014 was $1.96 million. In 2017, Forbes put Los Altos (94022 and 94024) as the 3rd and 48th most expensive ZIP codes in the United States with median home prices of $7,755,000 and $3,431,615, respectively. In 2018, data from the American Community Survey revealed that Los Altos was the fifth wealthiest city in the United States.
The 2010 United States Census reported that Los Altos had a population of 28,976. The population density was 4466.8 people per square mile (1724.6/km2). The racial makeup of Los Altos was 20,459 (70.6%) White, 148 (0.5%) African American, 48 (0.2%) Native American, 6,815 (23.5%) Asian, 59 (0.2%) Pacific Islander, 195 (0.7%) from other races, and 1,252 (4.3%) from two or more races. Hispanic or Latino of any race were 1,132 persons (3.9%).
The Census reported that 28,749 people (99.2% of the population) lived in households, 34 (0.1%) lived in non-institutionalized group quarters, and 193 (0.7%) were institutionalized.
There were 10,745 households, out of which 4,067 (37.9%) had children under the age of 18 living in them, 7,476 (69.6%) were opposite-sex married couples living together, 599 (5.6%) had a female householder with no husband present, 228 (2.1%) had a male householder with no wife present. There were 199 (1.9%) unmarried opposite-sex partnerships, and 55 (0.5%) same-sex married couples or partnerships. 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. There were 8,303 families (77.3% of all households); the average family size was 3.08.
The population was spread out with 7,560 people (26.1%) under the age of 18, 1,006 people (3.5%) aged 18 to 24, 5,273 people (18.2%) aged 25 to 44, 9,353 people (32.3%) aged 45 to 64, and 5,784 people (20.0%) who were 65 years of age or older. The median age was 46.2 years. For every 100 females, there were 93.1 males. For every 100 females age 18 and over, there were 90.9 males.
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. The homeowner vacancy rate was 0.7%; the rental vacancy rate was 5.0%. 24,669 people (85.1% of the population) lived in owner-occupied housing units and 4,080 people (14.1%) lived in rental housing units.