Alto, California

Not to be confused with Alta, California.

Alto
Census-designated place
Alto Location in California
Coordinates:
Country	United States
State	California
County	Marin County
Metro	San Francisco Bay Area
Area
• Total	0.126 sq mi (0.326 km2)
• Land	0.126 sq mi (0.326 km2)
• Water	0 sq mi (0 km2)  0%
Elevation	26 ft (8 m)
Population (2010)
• Total	711
• Density	5,600/sq mi (2,200/km2)
Time zone	Pacific (PST) (UTC-8)
• Summer (DST)	PDT (UTC-7)
GNIS feature ID	218191; 2582933
U.S. Geological Survey Geographic Names Information System: Alto, California; U.S. Geological Survey Geographic Names Information System: Alto, California

Alto is a census-designated place adjacent to Mill Valley in Marin County, California. It lies at an elevation of 26 feet (8 m). The population was 711 at the 2010 census.

Geography

According to the United States Census Bureau, the CDP covered an area of 0.326 square kilometers (0.126 sq mi), all of it land.

Demographics

The 2010 United States Census reported that Alto had a population of 711. The population density was 5,654.1 people per square mile (2,183.1/km²). The racial makeup of Alto was 619 (87.1%) White, 8 (1.1%) African American, 2 (0.3%) Native American, 30 (4.2%) Asian, 1 (0.1%) Pacific Islander, 16 (2.3%) from other races, and 35 (4.9%) from two or more races. Hispanic or Latino of any race were 51 persons (7.2%).

The Census reported that 100% of the population lived in households.

There were 297 households, out of which 108 (36.4%) had children under the age of 18 living in them, 140 (47.1%) were opposite-sex married couples living together, 34 (11.4%) had a female householder with no husband present, 6 (2.0%) had a male householder with no wife present. There were 17 (5.7%) unmarried opposite-sex partnerships, and 0 (0%) same-sex married couples or partnerships. 33.7% of households were made up of individuals and 10.1% had someone living alone who was 65 years of age or older. The average household size was 2.39. There were 180 families (60.6% of all households); the average family size was 3.05.

The population was spread out with 177 people (24.9%) under the age of 18, 47 people (6.6%) aged 18 to 24, 188 people (26.4%) aged 25 to 44, 236 people (33.2%) aged 45 to 64, and 63 people (8.9%) who were 65 years of age or older. The median age was 41.0 years. For every 100 females there were 81.8 males. For every 100 females age 18 and over, there were 79.2 males.

There were 313 housing units at an average density of 2,489.1 per square mile (961.0/km²), of which 157 (52.9%) were owner-occupied, and 140 (47.1%) were occupied by renters. The homeowner vacancy rate was 0.6%; the rental vacancy rate was 4.1%. 60.3% of the population lived in owner-occupied housing units and 39.7% lived in rental housing units.